80-008-FPTS-2_ESPEC_PRODUÇÃO ESPEC MAESRK TOP SIDE -FPSO

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DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 1 of 13 
 
 
 
 
 
 
 
 
MAERSK FLOATING PRODUCTION 
TECHNICAL STANDARD 
 
FPTS-2 
 
PIPING DESIGN AND MATERIALS 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 2 of 13 
 
 
 
INDEX 
 
1 SCOPE 
 
2 REGULATIONS, CODES AND STANDARDS 
2.1 Codes and Standards 
2.2 Company Standards 
 
3 ADDITIONAL REQUIREMENTS 
3.1 Design 
3.2 Materials 
3.3 Tests 
3.4 Identification 
3.5 Additional for Sour Service 
3.6 Additional Requirements for Water Injection 
 
4 CERTIFICATION REQUIREMENTS 
4.1 Documentation Classes 
4.2 Material Certificates 
 
ATTACHMENTS 
 
1a List of Abbreviations 
1b Piping Specification Code 
1c Piping Specification Index 
 
2a Valve Specifications 
2b Valve Description - Slimline Double Block and Bleed Valves 
2c Valve Description - Gate Valves 
2d Valve Description - Globe Valves 
2e Valve Description - Check Valves 
2f Valve Description - Plug Valves 
2g Valve Description - Ball Valves 
2h Valve Description - Butterfly Valves 
2i Valve Description - Needle Valves 
 
3 Guidelines for Valve Certification Requirements 
 
4 Thermowell Connections and Specifications 
 
5 Piping Classes 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 3 of 13 
 
 
AUGUST 98 was the original date of all documents originally issued in this publication. 
All subsequent revisions will be issued under the cover of an authorised transmittal sheet which 
will include an instruction to record revisions on this sheet. 
 
 
Please file a copy of each transmittal sheet behind this page. 
 
 
 
TRANSMITTAL SHEET 
DATE 
 
TRANSMITTAL SHEET 
REVISION 
CODE NUMBER 
 
DATE REVISION 
 WAS CARRIED OUT 
 
 
PERSON (job title) CONDUCTING 
THE REVISION 
 
 
SIGNATURE 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 4 of 13 
 
 
1 SCOPE 
 
This Maersk Floating Production Technical Standard (FPTS-2) covers the design and materi-
als for piping systems including valves, flanges, fittings etc. 
 
Compliance is required with all applicable parts of the Regulations, Codes and Standards 
specified below. 
 
FPTS-2 is a part of a whole set of Maersk Floating Production Technical Standards. It 
contains additional Company requirements or specifies requirements where the Regulations, 
Codes and Standards allow alternatives. 
 
 
2 REGULATIONS, CODES AND STANDARDS 
 
All Regulations, Codes and Standards etc. referred to in this document are the latest edition, 
unless otherwise stated. 
 
2.1 Codes and Standards 
 
For applicable international codes and standards, refer to FPTS-0. 
 
2.2 Company Standards 
 
Standard FPES-01 Topsides and Turret Engineering Requirements 
Standard FPTS-3 Fabrication, Erection and Testing of Pipework 
80-008-DS-01 Document Management 
80-008-DS-02 Vendor Data Requirements 
 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 5 of 13 
 
 
3 ADDITIONAL REQUIREMENTS 
 
3.1 Design 
 
3.1.0 General 
 
Design, Fabrication, Installation, Hook Up, Testing and Commissioning shall be performed 
and documented in accordance with the requirements set by Codes and Standards listed in 
this document or equivalent International Codes and Standards. 
 
Furthermore, the design shall fulfil the requirements of Codes, Standards, Safety Regulations 
and the Rules and Regulations of the National Authorities where the System is to be 
Operational. 
 
The design of individual components shall be of sufficient size and strength to safely manage 
the quantity and type of material shown on the flow sheets at the design pressure and 
temperatures specified on the line schedule for the respective service, including relevant 
corrosion and erosion allowance. 
 
The material types, component types and pipe schedules contained in the Piping 
Specification (ref. attachment 5) are generally assumed to fulfil these requirements provided 
the design pressure and temperature of the lines in question fall within the design limits 
specified in the Piping Specification used. 
 
The limits of respective design codes other than ANSI B31.3 shall be indicated on the P & 
ID's. 
 
3.1.1 Connections 
 
Preferred branch connections on headers are indicated on each individual specification 
sheet, however, where required to suit the design / layout it is permissible to substitute o'lets 
with reducing tees in accordance with API RP 14E. 
 
Where lateral connections are required - latrolets or elbolets may be substituted for 
weldolets, sockolets or threadolets, according to the specification. 
 
For primary connection details see the relevant specification. 
 
Butt weld fittings can always substitute socket weld fittings. 
 
3.1.2 Components 
 
Pressure retaining fittings, and special nipples, not covered by type approval, shall be verified 
for compliance with recognised Codes. 
 
Compact flanges shall not be used without prior Company approval. 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 6 of 13 
 
 
 
ANSI B16.5 flanges may be substituted by Grayloc hub and clamp type joints for piping 
classes ANSI 600# and above in accordance with the attached Piping Specifications. Hub 
and clamp type joints from alternative suppliers may only be used with prior Company 
approval. 
 
Where high displacement stresses (i.e. >0.8 x Displacement Stress Range) are foreseen, low 
temperature material, including Charpy impact test, shall be specified. 
 
If not specifically called up as full bore (FB) on P&ID's, ball valves may be of the reduced 
bore type, one size less than the nominal pipe size or, in lieu thereof, similar plug type valves 
may be used. 
 
Duo-check valves shall be installed either with flow vertical upwards, or in horizon pipe. 
 
Special consideration must be made where special wall thickness and duo-check valves are 
quoted to allow the plates to swing. 
 
Plug valves and ball valves in hydrocarbon containing systems shall be specified to API 
SPEC 6FA or BS 6755. 
 
Ball valves shall be antistatic according to BS 5351. 
 
1" needle valves for instrument connections shall be specified with 3/16" orifice size.3.2 Materials 
 
3.2.1 Pressure Parts 
 
3.2.1.0 General 
 
All piping materials shall conform to an ASTM Standard unless otherwise specified. 
 
Materials of GRP (Glass Fibre Reinforced Plastic) piping shall comply with FPTS-2A. 
 
Welded piping or valves are not allowed unless specified by Company. 
 
All materials specified and installed shall be new, clean and free from rust, mill scale, pits and 
defects. 
 
No cast iron, ductile iron, malleable iron, aluminium, plastic or copper bearing alloy shall be 
used in hydrocarbon service. 
 
Carbon Steel piping (galvanized) shall not be used for potable water distribution systems 
downstream of the water maker. 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 7 of 13 
 
 
Stainless steel piping shall be specified for hydraulic oil systems. 
 
In case of a conducting medium in non conducting pipework, a number of conducting rings 
e.g. bronze must be inserted between a flange pair to keep the earthing resistance under 10 
M ohm according to ASTM D257-66. Flanges up to bonded equipment do not need the 
bronze rings. 
 
In case of a non-conducting medium in non-conducting pipe-work, the piping must be 
specified with an embedment of conducting material. When the resistance in the conducting 
material exceeds 10 M ohm, the piping must be earthed via a conducting ring as above. 
 
3.2.1.1 Chemical Composition 
 
Materials for welding shall comply with the following limitations: 
 
- Piping, valves and fittings of plain carbon steel, e.g. ASTM material standards A-105, 
A-106, A-234, A-333 Grade 6, A-350 Grade LF2 and A-420 Grade WPL6 or 
equivalent shall comply with the below improved requirements: 
 
C = 0.25% max. 
CE = 0.42% max. 
 
The carbon equivalent (CE) shall be calculated as follows: 
 
 
CE = C + Mn + 0.04 
 6 
 
or 
 
 
CE = C + Mn + Cr + Mo + V + Cu + Ni 
 6 5 15 
 
- Piping, valves and fittings of high yield steels, i.e. API 5L grade X52 and higher, shall 
comply with the following improved requirements: 
 
C = 0.25% max. 
Nb = 0.05% max. 
V = 0.08% max. 
Ti = 0.05% max. 
N = 0.009% max. 
CE = 0.42% max. 
 
Nb + V + Ti < 0.12% 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
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ORIGINAL DATE 
 
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ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 8 of 13 
 
 
However, N = 0.012% max. is acceptable, provided the following is fulfilled: 
Al > 3 x N 
 
The carbon equivalent (CE) shall be calculated as follows: 
 
CE = C + Mn + Cr + Mo + V + Cu + Ni 
 6 5 15 
 
3.2.2 Bolting 
 
3.2.2.0 General 
 
Bolting shall be in accordance with the relevant piping specification and ANSI B16.5. 
 
Bolts for RTJ flanges >3" shall be specified with over length (of maximum one nut height) to 
enable the use of hydraulic tightening tools. 
 
3.2.2.1 Surface Treatment 
 
Sizes M12 or greater than ½",shall be hot dip galvanised according to ASTM A 123. 
 
Sizes up to M12 or ½", shall be zinc electroplate according to ASTM B 633, class Fe/Zn 12 
with type II finish (coloured chromate conversion coating). 
 
3.2.3 Gaskets 
 
The following gaskets are acceptable: Supagraf, Sigraflex, Flexitallic, or equivalent approved 
by Company prior to fabrication. 
 
3.2.4 Thermowells 
 
Design: 
 
Thermowells shall be designed in accordance with ASME PTC 19.3. The Maersk Floating 
Production Technical Standard, FPTS-2, shall be used for the design limits. 
 
Attachment 4 contains a table listing the flange connection type and the physical sizes for 
the thermowells. 
 
Thermowells shall be type approved by the Certifying Agency. 
 
Branch connections 
 
150# - 300# rating: Raised face WELDO-flange 
600# - 2500# rating: PRO-GRAYLOC hub 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 9 of 13 
 
 
9000# special (HO-spec): PRO-GRAYLOC hub 
 
Materials: 
 
Thermowell materials shall be as follows, for: 
- Carbon steel lines: ASTM A-182 Grade F 316 
- 6% MO Austenitic and cunifer lines: ASTM A-182 Grade F 44 
- Duplex/Super Duplex lines: ASTM A-182 Grade F-51/Super Duplex 
 
Test wells shall have a screwed plug chained to the retainer flange. Plug material to be 316 L 
Stainless Steel, GRP or equivalent. 
 
3.3 Tests 
 
3.3.0 General 
 
Where additional mechanical tests (e.g. Charpy and hardness) are specified further to the 
tests required by the material standard in question, samples taken at the stage in the process 
where standard tensile testing is performed, are acceptable in lieu of samples taken on the 
finished product. Additional NDE required shall be performed on the finished product. 
 
3.3.1 Charpy Impact Requirements 
 
Piping material for design temperatures -10°C and below shall be low temperature material 
and shall be impact tested in accordance with ANSI B31.3 section 323.3 (i.e. materials -
10°C and below but above -29°C are also to be tested). 
 
Charpy impact values shall be in accordance with ANSI B31.3. 
 
Piping for high pressure systems (pressures in excess of ANSI class 2500) shall be tested in 
accordance with ANSI B31.3 Chapter IX, K323.3. 
 
3.3.2 NDE Requirements 
 
Prior to delivery, the following additional tests are required for pressure retaining carbon and 
stainless steel items 2" and larger nominal bore for use in welded piping systems with ANSI 
600 lbs and above ratings. 
 
3.3.2.1 Pipes 
 
Procedures: 
 
- ASTM Carbon Steel: 
Magnetic Particle Inspection to ASTM E 709. 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 10 of 13 
 
 
- API Carbon Steel: 
Ultrasonic Examination or Electromagnetic Inspection to API 5L Appendix E SR4. 
 
- ASTM Stainless Steel: 
Liquid Penetrant Examination to ASTM E165. 
 
Acceptance Criteria: 
 
- API Carbon Steel: 
API 5L Appendix E SR4. 
 
- Other: 
As per visual detected imperfections in the relevant ASTM material designation. 
 
3.3.2.2 Flanges and Fittings 
 
Procedures: 
 
- Carbon Steel: 
Magnetic Particle Inspection to ASTM A275. 
 
- Stainless Steel: 
Liquid Penetrant Examination to ASTM E165. 
 
Acceptance Criteria: 
 
- As per visual detected imperfections in the relevant ASTM material designation. 
 
3.3.2.3 Valve Forgings 
 
Procedure: 
 
- Carbon Steel: 
Magnetic Particle Inspection to ASTM A275. 
 
- Stainless Steel: 
Liquid Penetrant Examination to ASTM E165. 
 
Acceptance Criteria: 
 
- Carbon Steel: 
ANSI B16.34 annex C 
 
- Stainless Steel: 
ANSI B16.34 annex D 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
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ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 11 of 13 
 
 
 
3.3.2.4 Valve Castings 
 
Procedures: 
 
- Carbon Steel: 
Ultrasonic Examination to ASTM A609 and Magnetic Particle Examination to ASTM 
E709. 
 
- Stainless Steel: 
Radiographic Examination and Liquid Penetrant Examination to ANSI B16.34annex 
B and D. 
 
Acceptance Criteria: 
 
- Carbon Steel: 
ANSI B16.34 annex E and C 
 
- Stainless Steel: 
ANSI B16.34 annex B and D 
 
3.4 Identification 
 
3.4.0 General 
 
All piping materials shall be purchased marked for material identification. 
 
3.4.1 Tagging 
 
All components such as valves, traps etc. shall have a stainless steel tag permanently 
attached for identification. 
 
3.4.2 Stamping 
 
Only stamping with round nose steel stencils in permanent legible manner is allowed. 
 
3.4.3 Coding 
 
Pipes, fittings, flanges and certain materials for pipe supports supplied are to be colour 
marked, coded or distinguished by other means. 
 
If painting is used, the colours shall be painted with a good quality factory-mixed paint, on to 
dry, clean surfaces, free from oil, grease, dirt or mill scale. 
 
The paint shall be resistant to salt water atmosphere and freezing climates. It shall not, in 
itself, cause corrosion of the pipe or fittings to which it is applied. Paint containing lead, zinc, 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
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ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 12 of 13 
 
 
copper or tin shall not be used. 
 
The marking paint shall not obliterate identification symbols or markings and it shall not be 
applied to: 
 
a) inside of pipe, fittings or flanges; 
b) threads; 
c) weld bevels; 
d) gasket seating surface 
 
3.5 Additional for Sour Service 
 
Valves and other piping materials that are directly exposed to sour environments shall fully 
comply with the NACE MR-01-75. 
 
The minimum specified corrosion allowance shall be 1/8 in. (3 mm) for carbon steel. 
 
3.6 Additional Requirements for Water Injection 
 
All RTJ flanges for water injection piping systems shall be with soft iron seal rings (CS). 
 
All Grayloc connections in water injection services shall have the seal rims on the hubs clad 
by Inconel welding. The seal surface shall be re-machined after cladding. 
 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS 80-008-FPTS-2 PLY A3 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 FLOATING PRODUCTION 08-1998 OPS 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: TECHNICAL STANDARDS THI Page 13 of 13 
 
 
4 CERTIFICATION REQUIREMENTS 
 
4.1 Documentation Classes 
 
Documentation Class I comprise: 
 
a) High strength material not covered by ANSI B 31.3 
b) Valves of welded construction of ANSI 600 lbs rating and above. 
Pipes and fittings of welded construction not included in Documentation Class II. 
c) Pipes, fittings for welding and valves having ends for welding for: 
- process piping systems 
- hydrocarbon containing closed utility systems related to the process system 
d) Valves of welded construction not included in b) above. (ref. section 3.2.1.0) 
e) Utility piping not included in Documentation Class II below. 
 
Documentation Class II comprise: 
 
f) Utility pipes, fittings etc with design temperature below 180 oC and design pressure 
below 20 barg (ie ASTM B 16.5 150 lbs rating) 
g) Standard flanged and screwed valves 
h) Pipes and fittings in screwed systems 
 
Guidelines for valve certification requirements are provided in attachment 3 
 
4.2 Material Certificates 
 
Materials, work pieces and components shall be documented by certificates according to DIN 
50049, as given below: 
 
Documentation Class I a): 3.1 C 
Documentation Class I b): 3.1 B 
- Materials (pressure retaining parts): 3.1 B 
- work pieces and components 
ie welding work: 3.1 C 
Documentation Class I c), d) and e): 3.1 B 
Documentation Class II f): 2.2 
Documentation Class II g) and h): 2.1 
 
Weld attachments to structural steel covered by FPTS-31 shall be documented by certificates 
as required by this standard. 
 
Requirements to certification, welding procedure, NDE etc. for non-pressure welded 
attachments shall be as for the parent pipe to which it is welded. 
 
Pipe supports, clamps, bolts, gaskets and rings do not require documentation by certificates. 
 
C:\MY DOCUMENTS\ADOBE\FPTS-02-A3 PART 1.DOC 
 
TS-02 Annexe 1A 
Issued: 01.02.00______ 
Rev. 9 Page 1 of 3
LIST OF ABBREVIATIONS
The following abbreviations, which are commonly used in this industry have been used in these
specifications:
ANSI American National Standards Institute (Formerly USAS, ASA)
API American Petroleum Institute
ASME American Society of Mechanical Engineers
ASTM American Society for Testing and Materials
BE Bevelled End
BF Bottom Flat
BLE Bevelled Large End
B.O.P. Bottom of Pipe
BS British Standard
BW Butt Weld
C.C.F. Compressed Ceramic Fibre
C.C.S. Cast Carbon Steel
C.G.F. Compressed Kevlar Fibre or Compressed Glass Fibre
Cad. Plt. Cadmium Plated
C.S.S. Cast Stainless Steel
C.I. Cast Iron
Cplg. Coupling
CPVC Chlorinated Polyvinyl Chloride
CS Carbon Steel
CW Complete With
C.W.N. Composite Weld Neck
ECC. Eccentric
ELB Elbow
E.O.L. Elbolet
FB Full Bore
FC Fail Closed
FF Flat Faced
F.L.G. Flange
FO Fail Open
F.S. Forged Steel
F.S.S. Forged Stainless Steel
FSW. Thermal Fusion Socket Weld.
F.W. Field Weld
Galv. Galvanized
G.J. Ground Joint
GRP Glass fibre Reinforced Plastics
GR.OP. Gear Operated
H.A.Z. Heat Affected Zone
HH.S.F. Heavy Hexagon, Semi-Finished
H.T.D. Hydrostatic Test Diagram
IBV Instrument Block Valve
ID Inside Diameter
IIV Instrument Isolation Valve
in Inch
Int. Integral
lb Pounds
L.E.B. Large End Bevelled
LG. Long
 
TS-02 Annexe 1A 
Issued: 01.02.00______ 
Rev. 9 Page 2 of 3
LG WLD Longitudinally Welded
LTCS Low Temperature Carbon Steel
LTFS Low Temperature Forged Steel
LS Line Size
mm or MM Millimetres
NACE National Association of Corrosion Engineers
NB Nominal Bore
NDE Non Destructive Examination
NPTF (M) National Pipe Thread Female (Male)
N.R.S. Non-Rising Stem
OD Outside Diameter
OS & Y Outside Screw and Yoke (Rising Stem Valve)
P.B.E. Plain Both Ends
PE Polyethylene
P&ID Piping and Instrumentation Diagram
PIV Piping Isolation Valve
PDF Process Data Flow Sheet
P.O.E. Plain One End
P.S.E. Plain Small End
PSI Pounds/square inch
PVDF Polyvinylidene fluoride
R.B. Reduced Bore
RP Recommended Practice
RED. Reducer
R.F. Raised Face
RP Recommended Practice
R.S. Rising Stem
RTJ Ring Type Joint
Scrd. Screwed
SCH Schedule (pipe weights or wall thickness)
SDBB Slim-line Double Block and Bleed Valves
SE Socket End
SMLS Seamless
S.O. Slip On
S Sockolet
SW Socket Weld
SS Stainless Steel
STD WT Standard Weight
SPP Special Piping Part
SWAF Spiral Wound Asbestos Filled
SWSF Spiral Wound SUPAGRAF (or equivalent) Filled
T.B.E. Threaded Both Ends
T.F. Top Flat
Thk Thick
T.O.E. Threaded One End
T.O.L. Threadolet
T.S.E. Threaded Small End
T & C Threaded and Coupled
W.N. Welding Neck
W Weldolet
W.O.G. Water, Oil and Gas (Synonymous with Cold Working Pressure)
W.O. Wrench Operated
W.S.P. Working Steam Pressure
 
TS-02 Annexe 1A 
Issued: 01.02.00______ 
Rev. 9 Page 3 of 3
W/T Wall Thickness (Pipe)
XXS Double Extra Strong
XS Extra Strong
Y.I.A. Yorkshire Imperial Alloys
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2A THI 1/2 
 
 
 VALVES SPECIFICATION 
 Valve Denomination Code 
 
Example: 
 
( ) V BA 6 F ( ) Special Identifier where 
 * * * * * ******** required 
 * * * * * 
 * * * * *************** Type of Connection 
 * * * * 
 * * * ********************* Type of Valve 
 * * * 
 * * ***************************Piping Specification 
 * * 
 * ********************************** V for Valve 
 * 
 *************************************** Nominal Valve Size 
 
 
Type Valve 
 
1 - SDBB (Slim-line Double Block and Bleed) 
2 - Gate 
3 - Globe 
4 - Duo-Check 
5 - Plug 
6 - Ball 
7 - Swing, Ball and Piston Check 
8 - Butterfly 
9 - Instrument Needle Valve 
 
Type Connection 
 
BW - Butt Weld 
BW/S - Inlet Butt Weld/Outlet Screwed (NPT thread only) 
C - Capillary 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2A THI 2/2 
 
 
F - Flanged 
FSW - Fusion Socket Weld, thermal 
G - Grayloc 
G/S - Inlet Grayloc/Outlet Screwed (NPT thread only) 
S - Screwed (NPT thread only) 
SW - Socket Weld 
SW/S - Inlet Socket Weld/Outlet Screwed (NPT thread only) 
T - Taperlok 
W - Wafer 
 
Special Identifier 
 
(F) - Full Bore 
(R) - Reduced Bore 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2B THI 1/2 
 
 VALVE DESCRIPTION SLIMLINE DOUBLE BLOCK AND BLEED VALVES-SDBB (for instrument isolation), (V1) 
 
SDBB-valves to be antistatic and firesafe. 
 (PIV: piping isolation valve; IBV: instrument bleed valve; IIV: instrument isolating valve) 
 
 
VAM 1F/S 1/2 in - 2 in, 150 lb, SS 254 SMO or equal, wetted parts to NACE MR-01-75, non-wetted parts SS 316, inlet 
RF flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VAS 1F/S 1/2 in - 2 in, 150 lb, min design limit: 285 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RF flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VAX 1F/S 1/2 in - 2 in, 150 lb, SS DUPLEX, wetted parts to NACE MR-01-75, non-wetted parts SS 316, inlet RF
flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VBM 1F/S 1/2 in - 2 in, 300 lb, SS 254 SMO or equal, wetted parts to NACE MR-01-75, non-wetted parts SS 316 , inlet 
RF flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VBS 1F/S 1/2 in - 2 in, 300 lb, min design limit:740 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RF flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VBX 1F/S 1/2 in - 2 in, 300 lb, SS DUPLEX, wetted parts to NACE MR-01-75, non-wetted parts SS 316, inlet RF
flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VDS 1F/S 1/2 in - 2 in, 600 lb, min design limit:1480 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VDX 1F/S 1/2 in - 2 in, 600 lb, SS DUPLEX, wetted parts to NACE MR-01-75, non-wetted parts SS 316, inlet RTJ
flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VES 1F/S 1/2 in - 2 in, 900 lb, min design limit:2220 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VFO 1F/S 1/2 in - 2 in, 1500 lb, SS DUPLEX - UNS GR 32750 or 32760 - min basic stress 33.0 KSI/300 deg F, wetted 
parts to NACE MR-01-75, non-wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, 
OS&Y, bolted bonnet, back seat, handwheel; IBV: standard instrument valve head assembly, antitamper 
facility, vent port to be blocked; IIV: standard instrument valve head assembly, T-bar operated. 
 
 
VFS 1F/S 1/2 in - 2 in, 1500 lb, min design limit:3705 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2B THI 2/2 
 
VALVE DESCRIPTION SLIMLINE DOUBLE BLOCK AND BLEED VALVES-SDBB (for instrument isolation), (V1) 
 
SDBB-valves to be antistatic and firesafe. 
 (PIV: piping isolation valve; IBV: instrument bleed valve; IIV: instrument isolating valve) 
 
 
VFX 1F/S 1/2 in - 2 in, 1500 lb, SS DUPLEX, wetted parts to NACE MR-01-75, non-wetted parts SS 316, inlet RTJ
flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, handwheel; IBV: standard 
instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: standard instrument valve 
head assembly, T-bar operated. 
 
 
VGO 1F/S 1/2 in - 2 in, 2500 lb, SS SUPER-DUPLEX - see note 3 in pipe spec, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VGS 1F/S 1/2 in - 2 in, 2500 lb, min design limit:5200 psig/100 deg F, SS 316, wetted parts to NACE MR-01-75, non-
wetted parts SS 316, inlet RTJ flanged/outlet 1/2" NPT, PIV: needle valve, OS&Y, bolted bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
VHO 1G/S 1/2 in - 2 in, 9000 lb, SS SUPER-DUPLEX - see note 3 in pipe spec, wetted parts to NACE 0, non-wetted
parts SS 316, inlet GRAYLOC/outlet 1/2" NPT, PIV: needle valve, OS&Y, integrale bonnet, back seat, 
handwheel; IBV: standard instrument valve head assembly, antitamper facility, vent port to be blocked; IIV: 
standard instrument valve head assembly, T-bar operated. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2C THI 1/3 
 
 VALVE DESCRIPTION GATE VALVES - (V2) 
 
 Gate-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
VAA 2F 2 in - 24 in, 150 lb, CS, 1/16 in RF flanged, flexi wedge, OS & Y, bolted bonnet, 13% Cr trim with stellite seat. 
 
VAB 2F 2 in - 24 in, 150 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, flexi wedge, OS & Y, bolted bon-
net and gland. 
 
 
VAD 2F 2 in - 24 in, 150 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, flexi wedge, OS & Y, bolted
bonnet. 
 
 
VAG 2S 1/2 in - 2 in, 200 lb, leaded gunmetal BS 1400 -LG2 or AB2, screwed ends, solid wedge, union bonnet, trim as 
body or monel, rising stem, short pattern. 
 
 
VAK 2F 1/2 in - 4 in, 150 lb, leaded gunmetal BS 1400 -LG2 or AB2, FF flanged, screwed bonnet, monel trim or as
body, non-rising stem. 
 
 
VAU 2C 10 mm - 54 mm, Gunmetal full-way, capillary or union ends, to copper spec. 
 
VAU 2S 10 mm - 54 mm, Gunmetal full-way, screwed ends, to copper spec. 
 
VBA 2F 2 in - 24 in, 300 lb, CS, 1/16 in RF flanged, flexi wedge, OS & Y, bolted bonnet, F6 trim. 
 
VBB 2F 2 in - 24 in, 300 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, flexi wedge, OS & Y, bolted bon-
net. 
 
 
VBB 2SW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, socket weld ends, solid wedge, OS & Y, bolted 
bonnet. 
 
 
VBD 2F 2 in - 24 in, 300 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, flexi wedge, OS & Y, bolted
bonnet. 
 
 
VBD 2SW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, socket weld ends, solid wedge, OS & Y,
bolted bonnet. 
 
 
VBG 2S 1/2 in - 2 in, 800 lb, 316L SS body and trim, screwed ends, solid wedge, OS & Y, bolted bonnet. 
 
VDB 2BW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, solid wedge, OS & Y, bolted
bonnet. 
 
 
VDB 2F 1/2 in - 24 in, 600 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bonnet. 
 
VDD 2BW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, solid wedge, OS & Y, bolted 
bonnet. 
 
 
VDD 2F 1/2 in - 24 in, 600 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bon-
net. 
 
 
VDS 2BW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, solid wedge, OS & Y, bolted
bonnet. 
 
 
VDS 2F 1/2 in - 10 in, 600 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bonnet. 
 
VED 2BW 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, flexi wedge, OS & Y, bolted
bonnet. 
 
 
VED 2F 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bonnet. 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2C THI 2/3 
 
 VALVE DESCRIPTION GATE VALVES - (V2) 
 
 Gate-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
 
VED 2BW 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, flexi wedge, OS & Y, bolted bon-
net. 
 
 
VED 2F 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bonnet. 
 
VEO 2BW 3 in - 24 in, 900 lb, SS UNS32750 or UNS32760, wetted parts to NACE MR-01-75, butt weld ends, OS & Y,
flexi wedge, bolted bonnet. 
 
 
VEO 2F 3 in - 24 in, 900 lb, SS UNS32750 or UNS32760, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, flexi 
wedge, bolted bonnet. 
 
 
VES 2BW 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, flexi wedge, OS & Y, bolted bonnet. 
 
VES 2F 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, flexi wedge, OS & Y, bolted bonnet. 
 
VEX 2BW 3 in - 24 in, 900 lb, SS UNS31803, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, flexi wedge,
bolted bonnet. 
 
 
VEX 2F 3 in - 24 in, 900 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, flexi wedge, bolted 
bonnet. 
 
 
VFC 2BW 1/2 in - 2 in, 1500 lb, CS, wetted parts to NACE MR-01-75, XXS ends butt weld, solid wedge, OS & Y, bolted 
bonnet. 
 
 
VFC 2F 1/2 in - 24 in, 1500 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, > 3 in flexi wedge, OS & Y, bolted 
bonnet. 
 
 
VFE 2BW 1/2 in - 2 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, solid wedge, OS & Y, bolted
bonnet. 
 
 
VFE 2F 1/2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, > 3 in flexi wedge, OS & Y,
bolted bonnet. 
 
 
VFO 2BW 1/2 in - 2 in, 1500 lb, SS UNS32750 or UNS32760, wetted parts to NACE MR-01-75, butt weld ends, solid
wedge, OS & Y, bolted bonnet. 
 
 
VFO 2F 1/2 in - 2 in, 1500 lb, SS UNS32750 or UNS32760, wetted parts to NACE MR-01-75, RTJ flanged, solid
wedge, OS & Y, bolted bonnet. 
 
 
VFS 2BW 1/2 in - 10 in, 1500 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, ≥3 in flexi wedge, OS & Y, bolted 
bonnet. 
 
 
VFS 2F 1/2 in - 10 in, 1500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, ≥3 in flexi wedge, OS & Y, bolted 
bonnet. 
 
 
VFX 2BW 1/2 in - 2 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, butt weld ends, solid wedge, OS & Y, 
bolted bonnet. 
 
 
VFX 2F 1/2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, ≥3 IN flexi
wedge, bolted bonnet. 
 
 
VGF 2BW 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, > 3 in flexi wedge, OS & Y,
bolted bonnet. 
 
 
VGF 2F 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, ≥ 3 in flexi wedge, OS & Y,
bolted bonnet. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2C THI 3/3 
 
 VALVE DESCRIPTION GATE VALVES - (V2) 
 
 Gate-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
 
 
 
VGO 2BW 1/2 in - 12 in, 2500 lb, SS-Super duplex, see note 3, wetted parts to NACE MR-01-75, butt weld ends, > 3 in 
flexi wedge, OS & Y, bolted bonnet. 
 
 
VGO 2F 1/2 in - 12 in, 2500 lb, SS-Super duplex, see note 3, wetted parts to NACE MR-01-75, RTJ flanged, ≥ 3 in flexi 
wedge, OS & Y, bolted bonnet. 
 
VHO 2G 1 in - 12 in, 9000 lb, SS UNS 32750 or 32760, 12" body LTCS cladded or solid Super Duplex, wetted parts to 
NACE MR-01-75, Grayloc ends, ≥ 3 in flexi wedge, OS&Y, bolted bonnet. 
 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2D THI 1/3 
 
 VALVE DESCRIPTION GLOBE VALVES - (V3) 
 
 Globe-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
 
 
VAA 3F 2 in - 24 in, 150 lb, CS, 1/16 in RF flanged, OS & Y, boltedbonnet, F6 trim. 
 
VAB 3F 2 in - 24 in, 150 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, renewable seat, OS & Y, bolted 
bonnet. 
 
 
VAD 3F 2 in - 24 in, 150 lb, LTCS, all wetted part to NACE MR-01-75, 1/16 in RF flanged, renewable seat, OS & Y,
bolted bonnet. 
 
 
VAG 3S 1/2 in - 2 in, 200 lb, bronze, screwed ends, metal seat, union bonnet. 
 
VAK 3F 1/2 in - 24 in, 150 lb, BS 1400 - LG2 or AB2, FF/RF flanged, metal to metal seat, OS & Y, > 3 in bolted bon-
net, rising stem. 
 
 
VAM 3F 1/2 in - 24 in, 150 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 RF flanged, OS & Y, > 3 
in bolted bonnet, rising stem. 
 
 
VAN 3S 1/2 in - 1 1/2 in, 800 lb, SS, body 254 SMO or equal, screwed ends, OS & Y, bolted bonnet, rising stem. 
 
VAN 3F 2 in - 24 in, 150 lb, SS, body 254 SMO or equal, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VAS 3F 1/2 in - 24 in, 150 lb, SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VAT 3F 1/2 in - 6 in, 150 lb, Titanium, 1/16 in RF flanged, Titanium trim. 
 
VAU 3S 10 - 54 mm, Gunmetal, screwed ends, to copper spec. 
 
VAX 3BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VAX 3F 1/2 in - 24 in, 150 lb, Duplex SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VBA 3F 2 in - 24 in, 300 lb, CS, 1/16 in RF flanged, OS & Y, bolted bonnet, F6 trim. 
 
VBB 3F 2 in - 24 in, 300 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, renewable seat, OS & Y, bolted 
bonnet. 
 
 
VBB 3SW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, socket weld, OS & Y, bolted bonnet. 
 
VBD 3F 2 in - 24 in, 300 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VBD 3SW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, socket weld ends, OS & Y, bolted bonnet. 
 
VBG 3S 1/2 in - 2 in, 800 lb, SS, screwed ends, solid wedge, OS & Y, bolted bonnet. 
 
VBM 3BW 1/2 in - 1 1/2 in, 800 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, butt weld ends, OS & Y,
bolted bonnet, rising stem. 
 
 
VBM 3F 1/2 in - 24 in, 300 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, 
bolted bonnet. 
 
 
VBS 3F 1/2 in - 24 in, 300 lb, SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VBS 3SW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, socket weld ends, OS & Y, bolted bonnet. 
 
VBX 3BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2D THI 2/3 
 
 VALVE DESCRIPTION GLOBE VALVES - (V3) 
 
Globe-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
 
 
VBX 3F 1/2 in - 24 in, 300 lb, Duplex SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, OS & Y, bolted bonnet. 
 
VDB 3BW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VDB 3F 1/2 in - 24 in, 600 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, renewable seat, OS & Y, bolted
bonnet. 
 
 
VDD 3BW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VDD 3F 1/2 in - 24 in, 600 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VDS 3BW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VDS 3F 1/2 in - 24 in, 600 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VDX 3BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld, OS & Y, bolted bonnet. 
 
VDX 3F 1/2 in - 24 in, 600 lb, Duplex SS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VEB 3BW 3 in - 24 in, 900 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VEB 3F 3 in - 24 in, 900 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, renewable seat, OS & Y, bolted
bonnet. 
 
 
VED 3BW 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet, plug type 
disc. 
 
 
VED 3F 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet, plug type
disc. 
 
 
VEO 3BW 3 in - 24 in, 900 lb, SS UNS 32750 or UNS 32760, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, 
bolted bonnet. 
 
 
VEO 3F 3 in - 24 in, 900 lb, SS UNS 32750 or UNS 32760, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y,
bolted bonnet. 
 
 
VES 3BW 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VES 3F 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VEX 3BW 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VEX 3F 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VFC 3BW 1/2 in - 2 in, 1500 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, stellite faced seat, OS & Y, bolted 
bonnet. 
 
 
VFC 3F 1/2 in - 24 in, 1500 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, stellite faced seat, OS & Y, bolted 
bonnet. 
 
 
VFE 3BW 1/2 in - 2 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VFE 3F 1/2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2D THI 3/3 
 
 VALVE DESCRIPTION GLOBE VALVES - (V3) 
 
Globe-valves to be gear operated according to the notes in the piping specification. 
 Face-to-Face Dimensions: ASME B16.10 except for spec AG and AK where BS 5154 short pattern applies. 
 
 
 
VFO 3BW 1/2 in - 2 in, 1500 lb, SS UNS 32750 or UNS 32760, wetted parts to NACE MR-01-75, butt weld ends, OS & 
Y, bolted bonnet. 
 
 
VFO 3F 1/2 in - 2 in, 1500 lb, SS UNS 32750 or UNS 32760, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, 
bolted bonnet. 
 
 
VFS 3BW 1/2 in - 2 in, 1500 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VFS 3F 1/2 in - 24 in, 1500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VFX 3BW 1/2 in - 2 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, bolted bonnet. 
 
VFX 3F 1/2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VGF 3BW 1/2 in - 1 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, integral bonnet, 'Y'-pattern. 
 
VGF 3F 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
VGO 3BW 1/2 in - 1 in, 2500 lb, SS-Super duplex, see note 3, wetted parts to NACE MR-01-75, butt weld ends, OS & Y, 
bonnet (locked) type. 
 
 
VGO 3F 1/2 in - 12 in, 2500 lb, SS-Super duplex, see note 3, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, 
bonnet (locked) type. 
 
 
VGS 3BW 1/2 in - 1 in, 2500 lb, SS, wetted parts to NACEMR-01-75, butt weld ends, OS & Y, bolted bonnet type. 
 
VGS 3F 1/2 in - 10 in, 2500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, OS & Y, bolted bonnet. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2E THI 1/3 
 
 VALVE DESCRIPTION CHECK VALVES - (V4) & (V7) 
 V4: DUO-CHECK VALVE, V7: SWING, BALL, PISTON AND OTHER CHECK VALVES 
 Face-to-Face Dimensions for Wafer: API 594. 
 
VAA 4W 2 in - 24 in, 150 lb, CS body, metal to metal seat, wafer type, duo-check. 
 
 
VAB 4W 2 in - 24 in, 150 lb, CS body, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VAD 4W 2 in - 24 in, 150 lb, LTCS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VAG 7S 1/2 in - 1 1/2 in, 200 lb, bronze, screwed ends, horizontal lift, screwed cap, monel disc. 
 
VAH 7FSW 1/2 in - 2 in, Solid PVDF, plastic constructions type 360 or equal, spigot ends, vertical ball type. 
 
VAK 4W 2 in - 24 in, 150 lb, body and plate to BS 1400 AB2, wafer type, duo-check, monel trim. 
 
VAK 7F 1/2 in - 1 1/2 in, 150 lb, Al-bronze to BS 1400 AB2, FF flanged, horizontal lift type. 
 
VAM 4W 2 in - 24 in, 150 lb, body and plates to 254 SMO or equal, wetted parts to NACE MR-01-75, wafer type, duo-
check. 
 
 
VAS 4W 2 in - 24 in, 150 lb, SS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VAT 4W 2 in - 6 in, 150 lb, titanium wafer type, duo-check, titanium trim. 
 
VAT 7F 1/2 in - 1 1/2 in, 150 lb, titanium, horizontal ball/piston type, titanium trim. 
 
VAU 7C 10 mm - 54 mm, Gunmetal BS 1400 LG2 or similar, compression ends, to copper spec. 
 
VAU 7S 10 mm - 54 mm, Gunmetal BS 1400 LG2 or similar, screwed ends, to copper spec. 
 
VAX 4W 2 in - 24 in, 150 lb, SS, Duplex SS body and plate, wetted parts to NACE MR-01-75, metal to metal seat,
wafer type, duo-check. 
 
 
VAX 7BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal lift type,
bolted bonnet. 
 
 
 
VBA 4W 2 in - 24 in, 300 lb, CS, metal to metal seat, wafer type, duo-check. 
 
VBB 4W 2 in - 24 in, 300 lb, CS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VBB 7SW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, socket weld ends, horizontal piston type, bolted 
cover. 
 
 
VBD 4W 2 in - 24 in, 300 lb, LTCS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VBD 7SW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, socket weld ends, horizontal lift type, bolted 
bonnet. 
 
 
VBG 7S 1/2 in - 2 in, 800 lb SS, screwed ends, horizontal lift. 
 
VBM 7BW 1/2 in - 1 1/2 in, 800 lb, body and trim SMO 254 or equal, wetted parts to NACE MR-01-75, butt weld ends,
horizontal lift type, bolted bonnet. 
 
 
VBM 4W 2 in - 24 in, 300 lb, body and plate to SMO 254 or equal, wetted parts to NACE MR-01-75, wafer type, duo-
check. 
 
 
VBS 4W 2 in - 24 in, 300 lb, SS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check. 
 
VBS 7SW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, socket weld ends, horizontal lift type, bolted
bonnet. 
 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2E THI 2/3 
 
 VALVE DESCRIPTION CHECK VALVES - (V4) & (V7) 
 V4: DUO-CHECK VALVE, V7: SWING, BALL, PISTON AND OTHER CHECK VALVES 
 Face-to-Face Dimensions for Wafer: API 594. 
 
VBX 4W 2 in - 24 in, 300 lb, Duplex SS body and plates, wetted parts to NACE MR-01-75, metal to metal seat, wafer 
type, duo-check. 
 
 
VBX 7BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal lift type,
bolted bonnet. 
 
 
VDB 7BW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted
bonnet. 
 
 
VDB 4W 2 in - 24 in, 600 lb, CS, wetted parts to NACE MR-01-75, RTJ facing, metal to metal seat, wafer type, duo-
check, spring loaded. 
 
 
VDD 7BW 1/2 in - 1 1/2 in, 800 lb, LCTS, wetted parts to NACE MR-01-75, butt weld ends, wafer type, horizontal piston 
type, bolted bonnet. 
 
 
VDD 4W 2 in - 24 in, 600 lb, LTCS, wetted parts to NACE MR-01-75, RTJ facing, metal to metal seat, wafer type, duo-
check, spring loaded. 
 
 
VDS 7BW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted
bonnet. 
 
 
VDS 4W 2 in - 24 in, 600 lb, 316 SS body and plate, wetted parts to NACE MR-01-75, RTJ facing, metal to metal seat, 
wafer type, duo-check, spring loaded. 
 
 
VDX 4W 2 in - 24 in, 600 lb, Duplex SS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, 
duo-check, spring loaded. 
 
 
VDX 7BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, 
bolted bonnet. 
 
 
VEB 4W 3 in - 24 in, 900 lb, CS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo-
check, spring loaded. 
 
 
VED 4W 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo-
check, spring loaded. 
 
 
VEO 4W 3 in - 24 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, metal to metal, RTJ facing,
wafer type, duo-check, spring loaded. 
 
 
VES 4W 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, metal to metal seat, wafer type, duo-check, spring 
loaded. 
 
 
 
VEX 4W 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer 
type, duo-check, spring loaded. 
 
 
VFC 7BW 1/2 in - 2 in, 1500 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted bon-
net. 
 
 
VFC 4W 2 in - 24 in, 1500 lb, CS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo-
check, spring loaded. 
 
 
VFE 7BW 1/2 in - 2 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted
bonnet. 
 
 
 
VFE 4W 2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo-
check, spring loaded. 
 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2E THI 3/3 
 
 VALVE DESCRIPTION CHECK VALVES - (V4) & (V7) 
 V4: DUO-CHECK VALVE, V7: SWING, BALL, PISTON AND OTHER CHECK VALVES 
 Face-to-Face Dimensions for Wafer: API 594. 
 
VFO 4W 2 in, 1500 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75 metal to metal seat, RTJ facing,
wafer type, duo-check, spring loaded. 
 
 
VFO 7BW 1/2 in - 2 in, 1500 lb body and trim SS UNS 32750 or 32760. Horizontal piston type, renewable seat, bolted 
bonnet. 
 
 
VFS 7BW 1/2 in - 2 in, 1500 lb SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted bon-
net. 
 
 
VFS 4W 2 in - 24 in, 1500 lb, SS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo-
check, spring loaded. 
 
 
VFX 7BW 1/2 in - 2 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, 
bolted bonnet. 
 
 
VFX 4W 2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75,metal to metal seat, RTJ facing, water 
type, duo-check, spring loaded. 
 
 
VGF 7BW 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted 
bonnet. 
 
 
VGF 4W 2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, metal to metal seat, RTJ facing, wafer type, duo 
check, spring loaded. 
 
 
VGO 7BW 1/2 in - 1 1/2 in, 2500 lb, SS-Super Duplex, see note 3, wetted parts to NACE MR-01-75, butt weld ends, hori-
zontal piston type, bolted bonnet. 
 
 
VGO 4W 2 in - 12 in, 2500 lb, SS-Super Duplex (see note 3), wetted parts to NACE MR-01-75, metal to metal seat,
RTJ facing, wafer type, duo check, spring loaded. 
 
 
VGS 7BW 1/2 in - 10 in, 2500 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, horizontal piston type, bolted
bonnet. 
 
 
VGS 4W 2 in - 10 in, 2500 lb, SS, wetted parts to NACE MR-01-75, metal seating, wafer type, duo-check, spring
loaded. 
 
 
 
VHO 4G 1 in - 12 in, 9000 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, Grayloc ends, metal to metal 
seat, duo-check, spring loaded. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2F THI 1/1 
 
 VALVE DESCRIPTION PLUG VALVES - (V5) 
 
Plug-valves to be gear operated according to the notes in the piping specification 
For Hydrocarbon containing systems fire-safe to be specified. 
 
VAD 5F 2 in - 24 in, 150 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet. 
 
 
VAM 5F 2 in - 24 in, 150 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted
bonnet. 
 
 
VAS 5F 2 in - 24 in, 150 lb, SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet, PTFE sleeve. 
 
 
VAX 5F 2 in - 24 in, 150 lb, Duplex SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet, PTFE
sleeve. 
 
 
VBD 5F 2 in - 24 in, 300 lb, LTCS body and plug, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet, 
PTFE sleeve. 
 
 
VBM 5F 2 in - 24 in, 300 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted
bonnet. 
 
 
VBS 5F 2 in - 24 in, 300 lb, SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet, PTFE sleeve. 
 
VBX 5F 2 in - 24 in, 300 lb, Duplex SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, bolted bonnet, PTFE
sleeve. 
 
 
VDD 5F 2 in - 24 in, 600 lb, LTCS, flanged RTJ, PTFE sleeve, bolted bonnet, sour trim. 
 
 
VDS 5F 2 in - 24 in, 600 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet, PTFE sleeve. 
 
VDX 5F 2 in - 24 in, 600 lb, Duplex SS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet, PTFE sleeve. 
 
VED 5F 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet. 
 
VEO 5BW 3 in - 12 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, PTFE sleeve, butt weld ends. 
 
VEO 5F 3 in - 12 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, PTFE sleeve, RTJ flange. 
 
VES 5F 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet. 
 
VEX 5BW 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, PTFE sleeve, Butt weld ends. 
 
VEX 5F 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, PTFE sleeve, RTJ flange. 
 
VFE 5F 2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet. 
 
VFS 5F 2 in - 24 in, 1500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet. 
 
VFX 5F 2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet, PTFE
sleeve. 
 
 
VGF 5F 2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, bolted bonnet. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2G THI 1/4 
 
 VALVE DESCRIPTION BALL VALVES (V6) 
 
Ball valves shall according to the notes in the piping specification be with trunnion mounted ball and shall be gear operated. 
ESDV's and BDV's shall always be with trunnion mounted ball. 
Ball-valves to be antistatic and for hydrocarbon containing systems fire-safe. 
Face-to-face dimensions: ASME B16.10. Reduced bore = short pattern; Full Bore = long pattern; trunnion mounted = allways 
long pattern. 
 
VAA 6FF 2 in - 24 in, 150 lb, CS, 1/16 in RF flanged, full bore. 
 
VAA 6FR 2 in - 24 in, 150 lb, CS, 1/16 in RF flanged, reduced bore. 
 
VAB 6FF 2 in - 24 in, 150 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore. 
 
VAB 6FR 2 in - 24 in, 150 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore. 
 
VAD 6FF 1/2 in - 24 in, 150 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore. 
 
VAD 6FR 2 in - 24 in, 150 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore. 
 
VAG 6S 1/2 in - 2 in, 200 lb, bronze body, screwed ends, teflon seats, wrench operated. 
 
VAG 6FR 3 in - 24 in, 150 lb, body Al- bronze, FF flanged, reduced port, teflon seats. 
 
VAH 6FSW 1/2 in - 2 in, Solid Kynar body and ball, socket weld ends, full bore union body. 
 
VAM 6FF 1/2 in - 24 in, 150 lb, body and ball 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, 
full bore. 
 
 
VAM 6FR 1/2 in - 24 in, 150 lb, body and ball 254 SMO or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, 
reduced bore. 
 
 
VAN 6S 1/2 in - 1 1/2 in, 800 lb, body and ball 254 SMO or equal, screwed ends, full bore, teflon seats. 
 
VAP 6SE 20 mm - 110 mm, 150 lb, CPVC, socket ends, full bore, designer to give specifications. 
 
VAS 6FF 1/2 in - 24 in, 150 lb, SS body, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore, Viton O rings. 
 
VAS 6FR 1/2 in - 24 in, 150 lb, SS body, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore, Viton O
rings. 
 
 
VAT 6FR 1/2 in - 6 in, 150 lb, titanium body and ball, 1/16 RF flanged, resilient seated, tight shut-off, short, reduced
bore pattern. 
 
 
VAU 6C 10 mm - 54 mm, Gunmetal, capillary or union ends, full bore, to copper spec. 
 
VAU 6S 10 mm - 54 mm, Gunmetal, screwed ends, full bore, to copper spec. 
 
VAX 6BW 1/2 in - 1 1/2 in, 800 lb, body and ball SS DUPLEX, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VAX 6FF 1/2 in - 24 in, 150 lb, body and ball SS DUPLEX, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full
bore. 
 
 
VAX 6FR 2 in - 24 in, 150 lb, body and ball SS DUPLEX, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced 
bore. 
 
 
VBA 6FF 2 in - 24 in, 300 lb, CS, 1/16 in RF flanged, full bore. 
 
VBA 6FR 2 in - 24 in, 300 lb, CS, 1/16 in RF flanged, reduced bore. 
 
VBB 6FF 2 in - 24 in, 300 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore. 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2G THI 2/4 
 
 VALVE DESCRIPTION BALL VALVES (V6) 
 
Ball valves shall according to the notes in the piping specification be with trunnion mounted ball and shall be gear 
operated. 
ESDV's and BDV's shall always be with trunnion mounted ball. 
Ball-valves to be antistatic and for hydrocarbon containing systems fire-safe. 
Face-to-face dimensions: ASME B16.10.Reduced bore = short pattern; Full Bore = long pattern; trunnion mounted = 
allways long pattern. 
 
VBB 6FR 2 in - 24 in, 300 lb, CS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore. 
 
VBB 6SW 1/2 in - 1 1/2 in, 800 lb, CS, wetted parts to NACE MR-01-75, socket weld with Sch. 160 nipples A 106 Gr. B 
seamless, full bore, stainless steel trim, overall length: 400 mm. 
 
 
VBD 6SW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, socket weld with Sch. 160 seamless A-333 
Gr. B nipples, full bore, SS trim, overall length: 400 mm. 
 
 
VBD 6FF 1/2 in - 24 in, 300 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore, teflon seats. 
 
VBD 6FR 1/2 in - 24 in, 300 lb, LTCS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore, teflon seats. 
 
VBG 6S 1/2 in - 2 in, 800 lb, SS body and trim, screwed ends. 
 
VBM 6BW 1/2 in - 1 1/2 in, 800 lb, body 254 SMO or equal, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VBM 6FF 1/2 in - 24 in, 300 lb, SS, body SMO 254 or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full 
bore. 
 
 
VBM 6FR 1/2 in - 24 in, 300 lb, SS, body SMO 254 or equal, wetted parts to NACE MR-01-75, 1/16 in RF flanged,
reduced bore. 
 
 
VBS 6FF 1/2 in - 24 in, 300 lb, SS, ball 316 SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore, teflon
seats. 
 
 
VBS 6FR 1/2 in - 24 in, 300 lb, SS, ball 316 SS, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced bore,
teflon seats. 
 
 
VBS 6SW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, socket weld with Sch. 160 A-312 TP 316 L
seamless nipples, full bore, overall length: 400 mm. 
 
 
VBX 6BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS, body and ball, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VBX 6FF 1/2 in - 24 in, 300 lb, Duplex SS body and ball, wetted parts to NACE MR-01-75, 1/16 in RF flanged, full bore. 
 
VBX 6FR 1/2 in - 24 in, 300 lb, Duplex SS body and ball, wetted parts to NACE MR-01-75, 1/16 in RF flanged, reduced 
bore. 
 
 
VDB 6FF 1/2 in - 24 in, 600 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VDB 6FR 1/2 in - 24 in, 600 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VDD 6BW 1/2 in - 1 1/2 in, 800 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VDD 6FF 1/2 in - 24 in, 600 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VDD 6FR 1/2 in - 24 in, 600 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VDS 6BW 1/2 in - 1 1/2 in, 800 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VDS 6FF 1/2 in - 24 in, 600 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VDS 6FR 1/2 in - 24 in, 600 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 VALVE DESCRIPTION BALL VALVES (V6) 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2G THI 3/4 
 
 
Ball valves shall according to the notes in the piping specification be with trunnion mounted ball and shall be gear operated. 
ESDV's and BDV's shall always be with trunnion mounted ball. 
Ball-valves to be antistatic and for hydrocarbon containing systems fire-safe. 
Face-to-face dimensions: ASME B16.10. Reduced bore = short pattern; Full Bore = long pattern; trunnion mounted = allways 
long pattern. 
 
VDX 6BW 1/2 in - 1 1/2 in, 800 lb, Duplex SS body and ball, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VDX 6FF 1/2 in - 24 in, 600 lb, Duplex SS body and ball, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VDX 6FR 1/2 in - 24 in, 600 lb, Duplex SS body and ball, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VEB 6FF 3 in - 24 in, 900 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VEB 6FR 3 in - 24 in, 900 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VED 6BW 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VED 6FF 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VED 6FR 3 in - 24 in, 900 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VEO 6BW 3 in - 24 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, Butt weld ends, fullbore. 
 
VEO 6FF 3 in - 24 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, RTJ flanged, fullbore. 
 
VEO 6FR 3 in - 24 in, 900 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VES 6BW 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VES 6FF 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, ends RTJ flanged, full bore. 
 
VES 6FR 3 in - 24 in, 900 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VEX 6BW 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VEX 6FF 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, RTJ flanged, fullbore. 
 
VEX 6FR 3 in - 24 in, 900 lb, SS UNS 31803, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VFC 6BW 1/2 in - 2 in, 1500 lb, CS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VFC 6FF 1/2 in - 24 in, 1500 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VFC 6FR 1/2 in - 24 in, 1500 lb, CS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VFE 6BW 1/2 in - 2 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VFE 6FF 1/2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VFE 6FR 1/2 in - 24 in, 1500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VFO 6BW 1/2 in - 2 in, 1500 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, butt welded ends, full bore. 
 
VFO 6FF 1/2 in - 2 in, 1500 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2G THI 4/4 
 
VALVE DESCRIPTION BALL VALVES (V6) 
 
Ball valves shall according to the notes in the piping specification be with trunnion mounted ball and shall be gear operated. 
ESDV's and BDV's shall always be with trunnion mounted ball. 
Ball-valves to be antistatic and for hydrocarbon containing systems fire-safe. 
Face-to-face dimensions: ASME B16.10. Reduced bore = short pattern; Full Bore = long pattern; trunnion mounted = allways 
long pattern. 
 
VFO 6FR 1/2 in - 2 in, 1500 lb, SS UNS 32750 or 32760, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore, 
teflon seats. 
 
 
VFS 6BW 1/2 in - 2 in, 1500 lb, SS, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VFS 6FF 1/2 in - 24 in, 1500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VFS 6FR 1/2 in - 24 in, 1500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VFX 6BW 1/2 in - 2 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, butt weld ends, full bore. 
 
VFX 6FF 1/2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VFX 6FR 1/2 in - 24 in, 1500 lb, SS UNS31803, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VGF 6BW 1/2 in - 24 in, 2500 lb, LTCS, wetted parts toNACE MR-01-751, butt weld ends, full bore. 
 
VGF 6FF 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VGF 6FR 1/2 in - 24 in, 2500 lb, LTCS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VGO 6BW 1/2 in - 1 in, 2500 lb, SS-Super Duplex, see note 3, wetted parts to NACE MR-01-75, butt weld ends, full
bore. 
 
 
VGO 6FF 1/2 in - 12 in, 2500 lb, SS-Super Duplex, see note 3, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VGO 6FR 1/2 in - 12 in, 2500 lb, SS-Super Duplex, see note 3, wetted parts to NACE MR-01-75, RTJ flanged, reduced 
bore. 
 
 
VGS 6FF 1/2 in - 12 in, 2500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, full bore. 
 
VGS 6FR 1/2 in - 12 in, 2500 lb, SS, wetted parts to NACE MR-01-75, RTJ flanged, reduced bore. 
 
VHO 6GR 1 in - 12 in, 9000 psi, SS UNS 32750 or 32760, 12" body LTCS Super Duplex cladded or solely Super Duplex, 
wetted parts to NACE MR-01-75, Grayloc ends, reduced bore. 
 
 
VHO 6GF 1 in - 12 in, 9000 psi, SS UNS 32750 or 32760, 12" body LTCS Super Duplex cladded or solely Super Duplex, 
wetted parts to NACE MR-01-75, Grayloc ends, full bore. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2H THI 1/1 
 
 VALVE DESCRIPTION BUTTERFLY VALVES - (V8) 
 
Butterfly-valves to be gear operated according to the notes in the piping specification. 
 
VAK 8W 2 in - 24 in, 150 lb, Al-bronze body and disc to BS 1400 Gr. AB2 or equal, wafer type, Buna N liner, monel
shaft and disc screws. 
 
 
VAM 8W 2 in - 24 in, 150 lb, body and disc 254 SMO or equal, wetted parts to NACE-01-75, wafer type, monel shaft
and disc screws. 
 
 
VBM 8W 2 in - 24 in, subject to Company approval: 
300 lb, body and disc 254 SMO or equal, wetted parts to NACE-01-75, wafer/flanged, monel shaft and disc 
screws. 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical 
Standards 
 
 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 2I THI 1/1 
 
 VALVE DESCRIPTION NEEDLE VALVES - (for instrument isolation), (V9) 
 
Needle-valves to be gear operated according to the notes in the piping specification. 
 The screwed outlet to be 1/2" NPT unless otherwise noted 
 
VBD 
9SW/S 
 1/2 in - 1 1/2 in, 3600 lb LTFS, wetted parts to NACE MR-01-75, inlet socket weld/outlet screwed, bar stock. 
 
VBS 9SW/S 1/2 in - 1 1/2 in, 3600 lb, forged SS, wetted parts to NACE MR-01-75, inlet socket weld/outlet screwed, bar 
stock. 
 
 
VFO 
9BW/S 
 1/2 in - 1 in, 6000 lb forged SS-Super Duplex, min. stress ≥ 33KSI/300 deg F, to NACE MR-01-75, inlet butt 
welded/outlet screwed. 
 
 
VFX 9BW/S 1/2 in 1 in, 6000 lb, forged SS A-182 GR F51, wetted parts to NACE MR-01-75, inlet butt weld/outlet screwed, 
bar stock, packed stem. 
 
 
VGF 
9BW/S 
 1/2 in and 1 1/2 in, 6000 lb, LTFS, wetted parts to NACE MR-01-75, inlet butt weld/outlet screwed, bar stock. 
 
VGO 
9BW/S 
 1/2 in - 1 in, 6000 lb, forged SS-Super Duplex, see note 3 in pipe spec, wetted parts to NACE MR-01-75, inlet 
butt weld/outlet screwed, bar stock. 
 
 
VGS 
9BW/S 
 1/2 in - 1 1/2 in, 6000 lb, forged SS, wetted parts to NACE MR-01-75, inlet butt weld/outlet screwed, bar 
stock. 
 
 
VHO 9G/S 1", 10000 psi, SS UNS 32750 or 32760, see note 3 in pipe spec, wetted parts to NACE MR-01-75, inlet
grayloc/outlet screwed, bar stock. 
 
 
 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical Standards 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 4 THI 1/4 
 
THERMOWELL BRANCH CONNECTION AND SPECIFICATION 
 This table covers thermowells for both liquid and gas services 
 
 
 
Pipe Spec. 
 
Header Size 
(Inch) 
 
BranchSize/ 
Type 
 
L1 
 
(mm) 
 
L2 
 
(mm) 
 
L3 
 
(mm) 
 
AA 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AB 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AD 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AK 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AM 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AN 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AS 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
AX 
 
4-24" 
 
2"RF 
 
105 
 
250 
 
185 
 
BA 
 
4-18" 
 
2"RF 
 
110 
 
255 
 
190 
 
BA 
 
20-24" 
 
2"RF 
 
110 
 
265 
 
200 
 
BB 
 
4-14" 
 
2"RF 
 
110 
 
255 
 
190 
 
BB 
 
16-24" 
 
2"RF 
 
110 
 
265 
 
200 
 
BD 
 
4-24" 
 
2"RF 
 
110 
 
255 
 
190 
 
BG 
 
4-18" 
 
2"RF 
 
110 
 
255 
 
190 
 
BG 
 
20-24" 
 
2"RF 
 
110 
 
265 
 
200 
 
BK 
 
4-10" 
 
2"RF 
 
110 
 
255 
 
190 
 
BM 
 
4-8" 
 
2"RF 
 
110 
 
255 
 
190 
 
BM 
 
10-12 
 
2"RF 
 
110 
 
265 
 
200 
 
BS 
 
4-16" 
 
2"RF 
 
110 
 
255 
 
190 
 
BS 
 
18-24" 
 
2"RF 
 
110 
 
265 
 
200 
 
BX 
 
4-24" 
 
2"RF 
 
110 
 
255 
 
190 
 
DB 
 
4-6" 
 
2GR20 
 
130 
 
262 
 
212 
 
DB 
 
8-14" 
 
2GR20 
 
130 
 
272 
 
222 
 
DB 
 
16-24" 
 
2GR20 
 
130 
 
282 
 
232 
 
DD 
 
4-6" 
 
2GR20 
 
130 
 
262 
 
212 
 
DD 
 
8-14 
 
2GR20 
 
130 
 
272 
 
222 
 
DD 
 
16-24" 
 
2GR20 
 
130 
 
282 
 
232 
 
DG 
 
4-6" 
 
2GR20 
 
130 
 
262 
 
212 
 
 
Note: The stem protrusion inside header to be approximately 65 mm. The bore of the branch to be 
according to the piping specifications. The tolerance to be: +0.5 -0.0 mm. 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical Standards 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 4 THI 2/4 
 
THERMOWELL BRANCH CONNECTION AND SPECIFICATION 
 This table covers thermowells for both liquid and gas services 
 
 
 
Pipe Spec. 
 
Header Size 
(Inch) 
 
BranchSize/ 
Type 
 
L1 
 
 
L2 
 
 
L3 
 
(mm) (mm) (mm) 
DG 8-14" 2GR20 130 272 222 
 
DG 
 
16-24" 
 
2GR20 
 
130 
 
282 
 
232 
 
DS 
 
4-6" 
 
2GR20 
 
130 
 
252 
 
202 
 
DS 
 
8-16" 
 
2GR20 
 
130 
 
272 
 
222 
 
DS 
 
18-24" 
 
2GR20 
 
130 
 
282 
 
232 
 
DX 
 
4-6" 
 
2GR20 
 
130 
 
252 
 
202 
 
DX 
 
8-20" 
 
2GR20 
 
130 
 
272 
 
222 
 
DX 
 
24" 
 
2GR20 
 
130 
 
282 
 
232 
 
EB 
 
4-14" 
 
2GR20 
 
130 
 
272 
 
222 
 
EB 
 
16-24" 
 
2GR20 
 
130 
 
297 
 
247 
 
ED 
 
4-14" 
 
2GR20 
 
130 
 
272 
 
222 
 
ED 
 
16-24" 
 
2GR20 
 
130 
 
297 
 
247 
 
EO 
 
4-6" 
 
2GR20 
 
130 
 
252 
 
202 
 
EO 
 
8-24" 
 
2GR20 
 
130 
 
272 
 
222 
 
ES 
 
4-6" 
 
2GR20 
 
130 
 
262 
 
212 
 
ES 
 
8-14" 
 
2GR20 
 
130 
 
272 
 
222 
 
ES 
 
16-24" 
 
2GR20 
 
130 
 
297 
 
247 
 
EX 
 
4" 
 
2GR20 
 
130 
 
252 
 
202 
 
EX 
 
6-8" 
 
2GR20 
 
130 
 
262 
 
212 
 
EX 
 
10-16" 
 
2GR20 
 
130 
 
272 
 
222 
 
EX 
 
18-24" 
 
2GR20 
 
130 
 
282 
 
232 
 
FB 
 
4-6" 
 
2GR14 
 
130 
 
272 
 
222 
 
FB 
 
8-14" 
 
2GR14 
 
130 
 
287 
 
237 
 
FB 
 
16-24" 
 
2GR14 
 
130 
 
312 
 
262 
 
FC 
 
4-6" 
 
2GR14 
 
130 
 
272 
 
222 
 
FC 
 
8-12" 
 
2GR14 
 
130 
 
282 
 
232 
 
FC 
 
14-24" 
 
2GR14 
 
130 
 
312 
 
262 
FD 
 
4-8" 
 
2GR14 
 
130 
 
272 
 
222 
 
 
Note: The stem protrusion inside header to be approximately 65 mm. The bore of the branch to be 
according to the piping specifications. The tolerance to be: +0.5 -0.0 mm. 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSKCONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical Standards 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 4 THI 3/4 
 
THERMOWELL BRANCH CONNECTION AND SPECIFICATION 
 This table covers thermowells for both liquid and gas services 
 
 
 
Pipe Spec. 
 
Header Size 
(Inch) 
 
BranchSize/ 
Type 
 
L1 
 
 
L2 
 
 
L3 
 
(mm) (mm) (mm) 
FD 10-12" 2GR14 130 282 232 
 
FD 
 
14-16" 
 
2GR14 
 
130 
 
292 
 
242 
 
FD 
 
18-24" 
 
2GR14 
 
130 
 
312 
 
262 
 
FE 
 
4-8" 
 
2GR14 
 
130 
 
272 
 
222 
 
FE 
 
10-12" 
 
2GR14 
 
130 
 
282 
 
232 
 
FE 
 
14" 
 
2GR14 
 
130 
 
292 
 
242 
 
FE 
 
16-24" 
 
2GR14 
 
130 
 
312 
 
262 
 
FS 
 
4-8" 
 
2GR16 
 
130 
 
272 
 
222 
 
FS 
 
10-14" 
 
2GR16 
 
130 
 
292 
 
242 
 
FS 
 
16-24" 
 
2GR16 
 
130 
 
312 
 
262 
 
FX 
 
4" 
 
2GR16 
 
130 
 
262 
 
212 
 
FX 
 
6-14" 
 
2GR16 
 
130 
 
272 
 
222 
 
FX 
 
16-20" 
 
2GR16 
 
130 
 
292 
 
242 
 
FX 
 
24" 
 
2GR16 
 
130 
 
312 
 
262 
 
GC 
 
4" 
 
2GR14 
 
130 
 
262 
 
212 
 
GC 
 
6-10" 
 
2GR14 
 
130 
 
282 
 
232 
 
GC 
 
12-16" 
 
2GR14 
 
130 
 
302 
 
252 
 
GC 
 
18" 
 
2GR14 
 
130 
 
312 
 
262 
 
GD 
 
4-6" 
 
2GR14 
 
130 
 
272 
 
222 
 
GD 
 
8-10" 
 
2GR14 
 
130 
 
282 
 
232 
 
GD 
 
12-14" 
 
2GR14 
 
130 
 
292 
 
242 
 
GD 
 
16-18" 
 
2GR14 
 
130 
 
312 
 
262 
 
GE 
 
4" 
 
2GR14 
 
130 
 
262 
 
212 
 
GE 
 
6-10" 
 
2GR14 
 
130 
 
282 
 
232 
 
GE 
 
12-16" 
 
2GR14 
 
130 
 
302 
 
252 
 
GE 
 
18" 
 
2GR14 
 
130 
 
312 
 
262 
GF 
 
4" 
 
2GR14 
 
130 
 
262 
 
212 
 
GF 
 
6-8" 
 
2GR14 
 
130 
 
282 
 
232 
 
 
Note: The stem protrusion inside header to be approximately 65 mm. The bore of the branch to be 
according to the piping specifications. The tolerance to be: +0.5 -0.0 mm. 
 
 
 
 
 
DOCUMENT ID 
 
AUTHORISED BY 
 
REVISION 
 MAERSK CONTRACTORS FPTS 02 
 
 
 
 
 
ORIGINAL DATE 
 
REVIEWED BY 
 
ITEM 
 Floating Production Technical Standards 
 
 
 
 
 
 
PREPARED BY 
 
PAGE 
 SUBJECT: Attachment 4 THI 4/4 
 
THERMOWELL BRANCH CONNECTION AND SPECIFICATION 
 This table covers thermowells for both liquid and gas services 
 
 
 
Pipe Spec. 
 
Header Size 
(Inch) 
 
BranchSize/ 
Type 
 
L1 
 
 
L2 
 
 
L3 
 
(mm) (mm) (mm) 
GF 10-12" 2GR14 130 302 252 
 
GF 
 
14-16" 
 
2GR14 
 
130 
 
312 
 
262 
 
GF 
 
18" 
 
2GR14 
 
130 
 
322 
 
272 
 
GO 
 
4-6" 
 
2GR20 
 
130 
 
262 
 
212 
 
GO 
 
8-12" 
 
2GR20 
 
130 
 
272 
 
222 
 
GS 
 
4" 
 
2GR14 
 
130 
 
262 
 
212 
 
GS 
 
6-8" 
 
2GR14 
 
130 
 
282 
 
232 
 
GS 
 
10-12" 
 
2GR14 
 
130 
 
302 
 
252 
 
HO 
 
4" 
 
2GR14 
 
130 
 
272 
 
222 
 
HO 
 
6" 
 
2GR14 
 
130 
 
282 
 
232 
 
HO 
 
8-12" 
 
2GR14 
 
130 
 
302 
 
252 
 
 
 
 
Note: The stem protrusion inside header to be approximately 65 mm. The bore of the branch to be 
according to the piping specifications. The tolerance to be: +0.5 -0.0 mm. 
SERVICE SWEET PROCESS AND RATING 150 # RF PIPING SPEC REV
UTILITY PIPING CORROSION ALLOWANCE 0,05"(1.3mm) AA 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) ¤
PIPE ASTM A-106 GR B, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-105 ASTM A-234 GR WPB
UNIONS NONE, USE FLANGES
PLUGS 3000 # SCREWED NONE
ASTM A-105
FLANGES [ 1 ] 150# RF,SOCKET WELD 150 # RF, WELDING NECK
ASTM A-105 ASTM A-105
SDBB VALVE for VAS 1F/S NONE
instrument isolation
GATE VALVE VBB 2SW VAA 2F
GLOBE VALVE VBB 3SW VAA 3F
CHECK VALVE (HOR) VBB 7SW VAA 4W
(VER) VAA 4W
PLUG VALVE NONE VAD 5F
BALL VALVE VBB 6SW VAA 6FF, VAA 6FR
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 150 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
SLIP-ON FLANGES MAY BE USED ONLY WHERE SPACE LIMITATIONS DICTATE.
FLAT-FACE FLANGES MAY BE USED ONLY TO MATCH EQUIPMENT.
ATMOSPHERIC OPEN DRAIN SYSTEM:
EQUAL AND REDUCING BRANCHES = 60 DEG. UNREINFORCED SET-ON.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
285 PSIG 260 PSIG 230 PSIG 200 PSIG
19,7 BAR G 17,9 BAR G 15,9 BAR G 13,8 BAR G
80 STD WT
MÆRSKMÆRSK
AA-7 SHEET 1 OF 2
SERVICE SOUR PROCESS AND RATING 150 # RF PIPING SPEC REV
UTILITY PIPING CORROSION ALLOWANCE 0,125"(3mm) AB 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) ¤
PIPE ASTM A-106 GR B, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-105 ASTM A-234 GR WPB
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150# RF,SOCKET WELD 150 # RF, WELDING NECK
ASTM A-105 ASTM A-105
SDBB VALVE for VAS 1F/S NONE
Instrument Isolation
GATE VALVE VBB 2SW VAB 2F
GLOBE VALVE VBB 3SW VAB 3F
CHECK VALVE (HOR) VBB 7SW VAB 4W
(VER) VAB 4W
PLUG VALVE NONE VAD 5F
BALL VALVE VBB 6SW VAB 6FF, VAB 6FR
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 150 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
ATMOSPHERIC OPEN DRAIN SYSTEM:
EQUAL AND REDUCING BRANCHES = 60 DEG. UNREINFORCED SET-ON.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
285 PSIG 260 PSIG 230 PSIG 200 PSIG NACE MR 01-75
19,7 BAR G 17,9 BAR G 15,9 BAR G 13,8 BAR G
80 STD WT160
MÆRSKMÆRSK
AB-7 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (-40 DEG F) RATING 150 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY SYSTEMS CORROSION ALLOWANCE 0,125"(3mm) AD 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,733,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) ¤
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-350 GR LF 2 ASTM A-420 GR WPL-6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150# RF SOCKET WELD 150 # RF, WELDING NECK
ASTM A-350 GR LF 2 ASTM A-350 GR LF 2
SDBB VALVE for VAS 1F/S NONE
Instrument Isolation
GATE VALVE VBD 2SW VAD 2F
GLOBE VALVE VBD 3SW VAD 3F
CHECK VALVE (HOR) VBD 7SW VAD 4W
(VER) VAD 4W
PLUG VALVE NONE VAD 5F
BALL VALVE VBD 6SW VAD 6FF, VAD 6FR
VAD 6FF
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 150 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK OUTER RING
MISCELLANEOUS
BRANCH FABRICATION:
HP FLARE SYSTEM: EQUAL BRANCHES = 60 DEG. REINFORCED SET-ON
REDUCING BRANCHES = BUTT WELD LATROLETS
ATMOSPHERIC OPEN DRAIN SYSTEM:
EQUAL AND REDUCING BRANCHES = 60 DEG. UNREINFORCED SET-ON
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO- ¤
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE ¤
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 -40 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
285 PSIG 260 PSIG 230 PSIG 200 PSIG NACE MR-01-75
19,7 BAR G 17,9 BAR G 15,9 BAR G 13,8 BAR G
160 80 STD WT
MÆRSKMÆRSK
AD-7 SHEET 1 OF 2
SERVICE UTILITY SYSTEMS RATING 150 # FF PIPING SPEC REV
GALVANIZED [ 3 ] CORROSION ALLOWANCE 0,05 " (1.3mm) AG 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) STD WT
PIPE ASTM A-53 GR B, ASTM A-106 GR B, SEAMLESS
SEAMLESS [T&C]
FITTINGS [ 1 ] 2000 # SCREWED [ 4 ] SEAMLESS BUTT WELD
ASTM A-105, GALVANIZED ASTM A-234 GR WPB
UNIONS SCREWED NONE, USE FLANGES
PLUGS SOLID BAR STOCK, SCREWED NONE
ASTM A-105, GALVANIZED
FLANGES [ 1 ] 150# FF,SCREWED 150 # FF, WELDING NECK
ASTM A-105, GALVANIZED ASTM A-105
SDBB VALVE for VAS 1F/S NONE
Instrument Isolation
GATE VALVE VAG 2S NONE
GLOBE VALVE VAG 3S NONE
CHECK VALVE (HOR) VAG 7S VAK 4W
(VER) VAK 4W
PLUG VALVE NONE
BALL VALVE VAG 6S VAG 6FR
NEEDLE VALVE NONE
SPECIAL NONE NONE
GRIPCOUPLING
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 150 # CGF FULL FACE WITH BOLT HOLES 1,5 MM THICK
MISCELLANEOUS
ALL GALVANIZED ITEMS TO BE HOT DIPPED TO ISO 1461 OR EQ. 3" THRU 24" NB PIPE SIZES TO BE GALVANIZED AFTER FABRICATION.
ALL FIELD WELDS MUST BE LOCATED BY FLANGES UNLESS GRIP COUPLINGS ARE USED.
WELDING ATTACHMENTS AFTER GALVANIZING ARE NOR PERMITTED. 
THREAD DIMENSIONS TO CONFIRM WITH ANSI B1.20.1 OR API STD 5B (NPT). ¤
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 TH TH TH TH TH TH TH TH TH TH TH SRT SRT SRT SRT ST
0,75 TH TH TH TH TH TH TH TH TH TH TH SRT SRT SRT ST
B 1 TH TH TH TH TH TH TH TH TH TH TH SRT SRT ST
R 1,5 TH TH TH TH TH TH TH TH TH TH TH SRT ST
A 2 TH TH TH TH TH TH TH TH TH TH TH ST
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T
 8 W W W W W W RT T NOTES ¤
S 10 W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
I 12 W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
Z 14 W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
E 16 W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
18 W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
(IN) 20 RT T TO BE USED.
24 T T = BUTT WELD EQUAL TEE 3) ONLY TO BE USED FOR EXISTING GALV.
W = WELDOLET / WELDOFLANGE CARBON STEEL FIREWATER SYSTEMS.
TH = THREDOLET 4) CAN BE SUBSTITUTED BY 3000#.
RT = BUTT WELD REDUCING TEE
SRT = SCREWED REDUCING TEE
ST = SCREWED EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 250 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 120 DEG C API RP 14 E
225 PSIG 215 PSIG 205 PSIG
15,5 BAR G 14,8 BARG 14,1 BARG
80, GALVANIZED
MÆRSKMÆRSK
AG-8 SHEET 1 OF 2
SERVICE RATING 150 # FF PIPING SPEC REV
SODIUM HYPOCLORITE CORROSION ALLOWANCE NIL AH 5
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 40
PIPE SMLS SOLID PVDF NONE
FITTINGS [ 1 ] SOLID PVDF NONE
FUSION SOCKET WELD
UNIONS NONE, USE FLANGES NONE
PLUGS SOLID PVDF, BAR STOCK NONE
FUSION SOCKET WELD
FLANGES [ 1 ] 150 # FF, SOLID PVDF NONE
FUSION SOCKET WELD
GATE VALVE NONE
GLOBE VALVE NONE
CHECK VALVE VAH 7FSW NONE
PLUG VALVE NONE
BALL VALVE VAH 6FSW NONE
NEEDLE VALVE NONE
SPECIAL WASHERS: SMALL BRIGHT, LIGHT GAUGE, CHAMFERED METAL WASHERS TO BS 3410
 CADMIUM PLATED
BOLTING ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS 
HOT DIP GALVANIZED TO ASTM A-123, FOR WASHERS, SEE 'SPECIAL' ABOVE
GASKETS 150 # HYPALON RUBBER FULL FACE WITH BOLT HOLES 3 MM THICK
MISCELLANEOUS
PVDF IS A CRYSTALINE HOMOPOLYMER OF VINYLIDENE FLOURIDE AND IS MANUFACTURED BY BTR SILVERTOWN,
ENGLAND, OR APPROVED EQUIVALENT.
DO NOT USE SCREWED CONNECTIONS. ALL THERMAL FUSION SOCKET WELD JOINTS SHALL BE MADE UP IN
ACCORDANCE WITH MANUFACTURERS INSTRUCTION. PIPE MUST BE PROTECTED AFTER ERECTION AGAINST 
WELD AND GRINDING SPARKS TO AVOID BURN DAMAGE. SUPPORTING OF PIPEWORK SHALL BE THE MINIMUM 
RECOMMENDED BY THE PIPE MANUFACTURER.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 TR TR TR TR T
0,75 TR TR TR T
B 1 TR TR T
R 1,5 TR T
A 2 T
N 3
C 4
H 6 NOTES
 8 1) BRANCH CONNECTIONS FOR THERMO-
S 10 WELLS TO COMPLY WITH ATTACHMENT 4.
I 12
Z 14
E 16 LEGEND
18
(IN) 20 T=EQUAL TEE
24 TR=EQUAL TEE AND REDUCER
DESIGN LIMITS CODE
 14 TO 100 DEG F ASME B31.3
 -10 TO 38 DEG C API RP 14E
75 PSIG
5,2 BAR G
MÆRSKMÆRSK
AH-5 SHEET 1 OF 2
SERVICE RATING 150 # FF/RF PIPING SPEC REV
SEA WATER CORROSION ALLOWANCE NIL AK 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 16,0 25,0 30,0 44,5 57,0 88,9 108,0 159,0 219,1 267,0 323,9 368,0 419,0 457,2 508,0 610,0
WALL THICKNESS (MM) 2 2,5 3 4 4,5 5,5 6,5 7 8 8,5 10,5
PIPE SEAMLESS 90/10 CU/NI ,CONDITION 'O' ANNEALED LONGITUDINAL
WELDED, 'O'
FITTINGS [ 1,2 ] CAPILLARY ENDS SEAMLESS FORGINGS OR FABRICATED WELD CONSTRUCTION
 YIA TYPE MHD OR EQUAL WITH 100% RADIOGRAPHY TO ASME VIII UW 51
UNIONS CAPILLARY ENDS YIA USE FLANGES
 II MHD OR EQUAL
FLANGES [ 1 ] (SOLID) 150 # FF SLIP-ON TO BS 2871 CN 102
(TO BE USED ON NPS<=1,5" OR AGAINST FF VALVES OR EQUIPMENT ONLY)
FLANGES [ 1 ] (COMPOSITE INNER FLANGE - TO CN 102, DIMENSIONS TO DIN 86037
WELD NECK) BACKING FLANGE - ASTM A-105 GALVANIZED (ANSI 150 #) TO SUIT INNER FLANGE
SDBB VALVE for VAS 1F/S NONE
Instrument Isolation
GATE VALVE VAK 2F NONE
GLOBE VALVE VAK 3F
CHECK VALVE (HOR) VAK 7F VAK 4W
(VER) VAK 4W
BALL VALVE NONE
BUTTERFLY VALVE NONE VAK 8W
NEEDLE VALVE NONE
SPECIAL
BLIND FLANGES 150 # FF , ASTM A-105 GALVANIZED WITH 90/10 CU/NI DISK.
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS FULL AND RAISED FACE CONNECTIONS: 150# CGF FULL FACE WITH BOLT HOLES 1.5 MM THICK ¤
MISCELLANEOUS
3"AND LARGER SIZES SPOOLS TO BE FLANGED AND ALL FIELD WELDS TO BE LOCATED BY FLANGES.
ALL MATERIAL TO BE IN CONDITION 'O'
BLIND AND BACKING FLANGES: GALVANIZED TO BS 729 TABLE 1, AND PAINTED WITH 2 COATS OF POLYAMIDE EPOXY
PAINT.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S / RT RT RT T
0,75 S S S S S S S S S S S / / RT T
B 1 S S S S S S S S S S S RT RT T
R 1,5 S S S S S S S S S S S RT T
A 2 SD SD SD SD SD SD SD SD SD SD SD T
N 3 SD SD SD SD SD SD SD SD SD SD ET
C 4 SD SD SD SD SD SD SD SD SD ET
H 6 SD SD SD SD SD SD SD SD ET NOTES ¤
 8 SD SD SD SD SD SD SD ET 1) BRANCH CONNECTIONS FOR THERMO-
S 10 SD SD SD SD SD SD FET WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 SD SD SD SD SD FET 2) MATERIAL 2" AND SMALLER TO BS 2871
Z 14 SD SD SD SD FET PART 2, CZ 110. 3 " AND LARGER TO CN 102
E 16 SD SD SD FET LEGEND 3) MINIMUM PIPE SIZE 1" EXCEPT FOR NO
18 SD SD FET FLOW LINES, I.E. VENTS DRAINS ETC.
(IN) 20 SD FET ET=ONE PIECE EQUAL TEE
24 FET SD=SADDLE
T=CAPILLARY EQUAL TEE
S=SOCKOLET (BRAZED)
RT=CAPILLARY EQUAL TEE WITH 
 CAPILLARY REDUCER
FET=FABRICATED EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 250 DEG F BS 2870, 2871 AND 2875
 -10 TO 38 DEG C 93 DEG C 120 DEG C ASME B31.3, API RP 14E
225 PSIG 215 PSIG 205 PSIG EEMUA PUBLICATION NO 144,145,146
15,5 BARG 14,8 BARG 14,1 BARG
MÆRSKMÆRSK
AK-7 SHEET 1 OF 2
SERVICE SOUR PROCESS AND UTILITY RATING 150 # RF PIPING SPEC REV
SEAWATER CORROSION ALLOWANCE NIL AM 7 ¤
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 10S
PIPE SEAMLESS A-312-S31254 SEAMLESS ASTM A-312-S31254 / B-677-N08926 ¤
 B-677-N08926 WELDED ASTM A-358 S31254 Class 1 and 3 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 44 SEAMLESS BUTT WELD ASTM A-182 GR F 44 / A-403 WP-S S31254 ¤
OR A-403 WP-S S31254 WELDED BUTT WELD ASTM A-403 WP-WX S31254 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150 # RF, COMPOSITE: STUB END ASTM A-182 GR F 44
 LAPPED FLANGE ASTM A-182 GR F 316 ¤
SDBB VALVE for VAM 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VAM 3F VAM 3F
VBM 3BW
CHECK VALVE (HOR) VBM 7BW VAM 4W
(VER) VAM 4W
PLUG VALVE NONE VAM 5F
BALL VALVE VBM 6BW VAM 6FF, VAM 6FR
VAM 6FF, VAM 6FR
BUTTERFLY NONE VAM 8W
VALVE
NEEDLE VALVE NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 150 # TYPE DUPLEX SS UNS S31803 SWSF, 3/16 IN. THICK , WITH 1/8 IN. THICK SS316 OUTER RING ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES (A-182 GR F44). ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F ANSI B31.3
 -10 TO 38 DEG C 93 DEG C API RP 14 E
275 PSIG 245 PSIG NACE MR-01-75, WHERE APPLICABLE
19,0 BAR G 16,9 BAR G
MÆRSKMÆRSK
AM-7 SHEET 1 OF 2
SERVICE SEAWATER RATING 150 # RF PIPING SPEC REV
FIRE WATER SYSTEM CORROSION ALLOWANCE NIL AN 3
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 10S ¤
PIPE SEAMLESS A-312-S31254 SEAMLESS ASTM A-312-S31254 / B-677-N08926 ¤
 B-677-N08926 WELDED ASTM A-358 S31254 Class 1 and 3 ¤
FITTINGS [ 1 ] 3000# FSS SEAMLESS BUTT WELD ASTM A-182 GR F 44 / A-403 WP-S S31254 ¤
SCRD, A-182 GR F 44 WELDED BUTT WELD ASTM A-403 WP-WX S31254 ¤
UNIONS 3000# FSS USE FLANGES
SCRD, A 182-F44
PLUGS 3000# FSS
SCRD, A 182-F44
FLANGES [ 1 ] 150 # RF, COMPOSITE: STUB END ASTM A-182 GR F 44
 LAPPED FLANGE ASTM A-182 GR F 316 ¤
SDBB VALVE for VAM 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VAN 3S VAN 3F
CHECK VALVE (HOR) VBG 7S VAM 4W
(VER) VAM 4W
PLUG VALVE NONE
BALL VALVE VAN 6S VAM 6FF, VAM 6FR
BUTTERFLY NONE VAM 8W
NEEDLE VALVE NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 150 # TYPE DUPLEX SS UNS S31803 SWSF, 3/16 IN. THICK , WITH 1/8 IN. THICK SS316 OUTER RING ¤
MISCELLANEOUS
MATERIAL FOR SPRAY NOZZLES TO BE 254 SMO OR EQUAL.
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES (A-182 GR F44). ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 TH TH TH TH TH TH TH TH TH TH TH TH SRT SRT SRT ST
0,75 TH TH TH TH TH TH TH TH TH TH TH TH SRT SRT ST
B 1 TH TH TH TH TH TH TH TH TH TH TH TH SRT ST
R 1,5 TH TH TH TH TH TH TH TH TH TH TH RT ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
TH = THREDOLET
RT = BUTT WELD REDUCING TEE
SRT= SCRD. REDUCING TEE
ST = SCRD. EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C API RP 14 E
275 PSIG 245 PSIG
19,0 BAR G 16,9 BAR G
40S
MÆRSKMÆRSK
AN-3 SHEET 1 OF 2
 SERVICE SEAWATER, POTABLE WATER RATING 150 # FF PIPING SPEC REV
FOR ACCOMODATION [ 1 ] CORROSION ALLOWANCE NIL AP 4
SIZE NOMINAL (MM) 20 25 32 50 63 90 110 160 200 250 315 355 400 450 500 630
Actual(OD),max (MM) 20,3 25,3 32,3 50,5 63,6 90,9 111,0 161,5 201,8 252,3 317,9 358,2 403,6 454,1 504,5 635,7
WALL THICKNESS (SCH) DIMENSIONS MINIMUM TO DS 2119 (PN 10)
PIPE POLYETHYLENE (PEM) TO DS 2119, PN 10
FITTINGS [ 3 ] PEM FITTINGS FOR ELECTROFUSION WELDING
UNIONS NONE
PLUGS NONE
FLANGES [ 3 ] BACKING FLANGES, POLYPROPYLEN WITH STEEL RE-INFORCEMENT
SDBB VALVE for VAS 1F/S
Instrument Isolation
GATE VALVE [ 2 ] VAK 2F NONE
GLOBE VALVE [ 2 ] VAK 3F
CHECK VALVE [ 2 ] VAK 4W
BALL VALVE VAP 6 SE NONE
BUTTERFLY VALVE [ 2 ] NONE VAK 8W
NEEDLE VALVE NONE
SPECIAL WASHERS: SMALL BRIGHT, LIGHT GAUGE, CHAMFERED METAL WASHERS TO BS 3410
BOLTING ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS 
HOT DIP GALVANIZED TO ASTM A-123, FOR WASHERS, SEE 'SPECIAL' ABOVE
GASKETS 150 # CGF FULL FACE WITH BOLT HOLES 1,5 MM THICK
MISCELLANEOUS
 PIPE LENGTHS TO BE P.E. OR FLANGED, EXACT LENGTH TO BE DETERMINED ON ISOMETRICS
 MAXIMUM FLOW VELOCITY : 2 M/S
 ALL MATERIAL TO BE FULLY RESISTANT TO ULTRA-VIOLET LIGHT
HEADER SIZE (MM)
630 500 450 400 355 315 250 200 160 110 90 63 50 32 25 20
20 RT RT RT RT RT RT RT RT RT RT RT RT RT RT RT T
25 RT RT RT RT RT RT RT RT RT RT RT RT RT RT T
B 32 RT RT RT RT RT RT RT RT RT RT RT RT RT T
R 50 RT RT RT RT RT RT RT RT RT RT RT RT T
A 63 RT RT RT RT RT RT RT RT RT RT RT T
N 90 RT RT RT RT RT RT RT RT RT RT T
C 110 RT RT RT RT RT RT RT RT RT T
H 160 RT RT RT RT RT RT RT RT T NOTES
 200 RT RT RT RT RT RT RT T
S 250 RT RT RT RT RT RT T 1) NOT TO BE USED FOR FIREWATER
I 315 RT RT RT RT RT T RELATED SYSTEMS
Z 355 RT RT RT RT T 2) ALL IN LINE VALVES TO BE
E 400 RT RT RT T LEGEND INDEPENDENTLY SUPPORTED
450 RT RT T
(MM) 500 RT T T = ELECTROFUSION EQUAL TEE 3) BRANCH CONNECTIONS FOR THERMO-
630 T RT = REDUCING TEE WELLS TO COMPLY WITH ATTACHMENT 4.DESIGN LIMITS CODE
 14 TO 68 DEG F 77 DEG F 86 DEG F 95 DEG F 104 DEG F DS 2119
 -10 TO 20 DEG C 25 DEG C 30 DEG C 35 DEG C 40 DEG C MANUFACTURER'S RECOMMENDED
145 PSIG 116 PSIG 91 PSIG 73 PSIG 58 PSIG PRACTICE
10,0 BAR G 8,0 BAR G 6,3 BAR G 5,0 BAR G 4,0 BAR G
MÆRSKMÆRSK
AP-4 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (-150 DEG F) RATING 150 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY SYSTEMS CORROSION ALLOWANCE NIL AS 7
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH) 10S
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-312 TP316L / A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
ASTM A-182 GR F 316L WELDED BUTT WELD ASTM A-403 WP-W 316L ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150# RF SOCKET WELD 150 # RF, WELDING NECK
ASTM A-182 GR F 316L ASTM A-182 GR F 316L
SDBB VALVE for VAS 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VAS 3F VAS 3F
VBS 3SW
CHECK VALVE (HOR) VBS 7SW VAS 4W
(VER) VAS 4W
PLUG VALVE NONE VAS 5F
BALL VALVE VBS 6SW VAS 6FF, VAS 6FR
VAS 6FF, VAS 6FR
NEEDLE VALVE VBS 9SW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS 150 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK SS 316 OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 S S S S S S S S S S S S RST RST RST ST
0.75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1.5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T
Z 14 W W W RT T
E 16 W W RT T LEGEND
18 W RT T
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
230 PSIG 195 PSIG 175 PSIG 160 PSIG NACE MR-01-75
15.9 BAR G 13.4 BAR G 12.1 BAR G 11.0 BAR G
MÆRSKMÆRSK
AS-7 SHEET 1 OF 2
SERVICE SODIUM HYPOCHLORITE RATING 150 # RF PIPING SPEC REV
FERRIC CHLORIDE CORROSION ALLOWANCE NIL AT 7
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH)
PIPE SEAMLESS SEAMLESS ASTM B-337 GR 2 NONE ¤
ASTM B-337 GR 2 WELDED ASTM B-337 GR 2 ¤
FITTINGS [ 1 ] BUTT WELD, SEAMLESS SEAMLESS BUTT WELD ASTM B-363 WPT2 NONE ¤
ASTM B-363 GR WPT2 WELDED BUTT WELD ASTM B-363 WPT2 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150 # RF, COMPOSITE: STUB END ASTM B-363 GR WPT2 NONE
LAPPED FLANGE ASTM A-182 GR F316 ¤
SDBB VALVE for VAT 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VAT 3F NONE
CHECK VALVE (HOR) VAT 7F VAT 4W NONE
(VER) VAT 4W
PLUG VALVE NONE
BALL VALVE VAT 6FR NONE
NEEDLE VALVE NONE
SPECIAL
BLIND FLANGES 150 # RF SOLID ASTM B-348 GR 2 OR ASTM B-265 GR 2
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 150 # EPDM RAISED FACE 1,5 MM THICK ¤
MISCELLANEOUS
ASTM B-348 GR 2 CAN BE USED FOR O'LETS.
SPOOLS TO BE FLANGED AND ALL FIELD WELDS TO BE LOCATED BY FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 R R R R R R R RT RT RT T
0,75 R R R R R R RT RT RT T
B 1 R R R R R R RT RT T
R 1,5 R R R R RT RT RT T
A 2 R R R R RT RT T
N 3 R R R RT RT T
C 4 R R RT RT T
H 6 R RT RT T NOTES
 8 RT RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 T
Z 14
E 16 LEGEND
18
(IN) 20 T = BW EQUAL TEE
24 RT = BW REDUCING TEE
R = BW REDUCING TEE + 
 REDUCER
DESIGN LIMITS CODE
 14 TO 100 DEG F
 -10 TO 38 DEG C ASME B31.3
230 PSIG API RP 14E
15,9 BAR G
10S
MÆRSKMÆRSK
AT-7 SHEET 1 OF 2
SERVICE RATING 150 # RF PIPING SPEC REV
DOMESTIC HOT AND COLD WATER CORROSION ALLOWANCE NIL AU 5
SIZE NOMINAL (mm) 10 12 15 18 22 28 35 42 54
ACTUAL (OD) (mm)
WALL THICKNESS [1] (mm) 0.8 0.8 1.0 1.0 1.2 1.2 1.5 1.5 1.5
PIPE COPPER SEAMLESS, TO DS 2110 SERIE 3 (ISO 274) OR EQUAL, HARD OR 3/4 HARD CONDITION
FITTINGS [ 4 ] CAPILLARY ENDS TO DS 2110 [3] OR COMPRESSION
UNIONS/GRIP COUPLINGS CAPILLARY ENDS TO DS 2110 [3] OR COMPRESSION
PLUGS USE CAPILLARY STOP ENDS [3] ON PIPING, SCREWED PLUGS IN VALVES
FLANGES [ 4 ] (COMPOSITE) CAPILLARY INNER FLANGE, COPPER, YORCALLOY OR EQUAL, BORE AS PER DS 2110
BACKING FLANGE, ASTM A-105 GALVANIZED, 150 # RF TO SUIT INNER FLANGE
GATE VALVE VAU 2C, VAU 2S [2]
GLOBE VALVE VAU 3S [2]
CHECK VALVE VAU 7C, VAU 7S [2]
PLUG VALVE NONE
BALL VALVE VAU 6C, VAU 6S [2]
NEEDLE VALVE NONE
SPECIAL NONE
BOLTING ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS 
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 150 # CGF FULL FACE WITH BOLT HOLES 1,5 MM THICK
MISCELLANEOUS
HEADER SIZE (mm)
54 42 35 28 22 18 15 12 10
10 RTR RTR RTR RTR RTR RTR RT RT T
12 RTR RTR RTR RTR RT RT RT T
B 15 RTR RTR RT RT RT RT T
R 18 RT RT RT RT RT T
A 22 RT RT RT RT T
N 28 RT RT RT T
C 35 RT RT T
H 42 RT T
 54 T NOTES
S
I 1) LARGER WALL THICKNESS IS ACCEPTABLE
Z
E 2) USE ADAPTORS CAPILLARY/SCREWED
LEGEND OR COMPRESSION/SCREWED
(mm)
T = EQUAL TEE 3) USE FLUX TYPE F-SW-25 TO DIN 8511
RT = REDUCING TEE AND SOLDER L-SnAg5 TO DIN 1707
RTR = REDUCING TEE + 
 REDUCER 4) BRANCH CONNECTIONS FOR THERMO-
 WELLS TO COMPLY WITH ATTACHMENT 4.
DESIGN LIMITS CODE
 14 TO 212 DEG F MANUFACTURER'S RECOMMENDED
 -10 TO 100 DEG C PRACTICE
145 PSIG API RP 14E
10,0 BARG
MÆRSKMÆRSK
AU-5 SHEET 1 OF 2
SERVICE RATING 150 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL AX 3
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH) 10S ¤
PIPE SEAMLESS SEAMLESS ASTM A-790 S31803 ¤
ASTM A-790 S31803 WELDED ASTM A-790 S31803 ¤
FITTINGS [ 1 ) SMLS, BW A-182 GR F 51 SEAMLESS BUTT WELD ASTM A-182 GR F 51 / A-815 WP-S S31803 ¤
OR A-815 WP-S S31803 WELDED BUTT WELD ASTM A-815 WP-W S31803 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 150 # RF, WELDING NECK
ASTM A-182 GR F51
SDBB VALVE for VAX 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VAX 3F VAX 3F
VAX 3BW
CHECK VALVE (HOR) VAX 7BW VAX 4W
(VER) VAX 4W
PLUG VALVE NONE VAX 5F
BALL VALVE VAX 6BW VAX 6FF, VAX 6FR
VAX 6FF
NEEDLE VALVE NONE
SPECIAL NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 150 # TYPE DUPLEX SS UNS S31803 SWSF, 3/16 IN. THICK , WITH 1/8 IN. THICK SS316 OUTER RING ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T
Z 14 W W W RT T
E 16 W W RT T LEGEND
18 W RT T
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
275 PSIG 245 PSIG 225 PSIG 200 PSIG NACE MR-01-7519.0 BAR G 16.9 BAR G 15.5 BAR G 13.8 BAR G
MÆRSKMÆRSK
AX-3 SHEET 1 OF 2
SERVICE SWEET PROCESS AND RATING 300 # RF PIPING SPEC REV
UTILITY PIPING CORROSION ALLOWANCE 0,05"(1.3mm) BA 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 80 STD WT 40 ¤
PIPE ASTM A-106 GR B, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-105 ASTM A-234 GR WPB
UNIONS NONE, USE FLANGES
PLUGS 3000 # SCREWED NONE
ASTM A-105
FLANGES [ 1 ] 300# RF,SOCKET WELD 300 # RF, WELDING NECK
ASTM A-105 ASTM A-105
SDBB VALVE for VBS 1F/S NONE
Instrument Isolation
GATE VALVE VBB 2SW VBA 2F
GLOBE VALVE VBB 3SW VBA 3F
CHECK VALVE (HOR) VBB 7SW VBA 4W
(VER) VBA 4W
PLUG VALVE NONE VBD 5F
BALL VALVE VBB 6SW VBA 6FF, VBA 6FR
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 300 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK SS 316 OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
740 PSIG 675 PSIG 655 PSIG 635 PSIG
51,0 BAR G 46,5 BAR G 45,2 BAR G 43,8 BAR G
30
MÆRSKMÆRSK
BA-8 SHEET 1 OF 2
SERVICE SOUR PROCESS AND RATING 300 # RF PIPING SPEC REV
UTILITY PIPING CORROSION ALLOWANCE 0,125"(3mm) BB 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) XS 40
PIPE ASTM A-106 GR B, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-105 ASTM A-234 GR WPB
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 300# RF,SOCKET WELD 300 # RF, WELDING NECK
ASTM A-105 ASTM A-105
SDBB VALVE for VBS 1F/S NONE
Instrument Isolation
GATE VALVE VBB 2SW VBB 2F
GLOBE VALVE VBB 3SW VBB 3F
CHECK VALVE (HOR) VBB 7SW VBB 4W
(VER) VBB 4W
PLUG VALVE NONE VBD 5F
BALL VALVE VBB 6SW VBB 6FF, VBB 6FR
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 300 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK SS 316 OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
740 PSIG 675 PSIG 655 PSIG 635 PSIG NACE MR 01-75
51,0 BAR G 46,5 BAR G 45,2 BAR G 43,8 BAR G
160
MÆRSKMÆRSK
BB-7 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (-40 DEG F) RATING 300 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY SYSTEMS CORROSION ALLOWANCE 0,125"(3mm) BD 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH)
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD
ASTM A-350 GR LF 2 ASTM A-420 GR WPL-6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 300# RF SOCKET WELD 300 # RF, WELDING NECK
ASTM A-350 GR LF 2 ASTM A-350 GR LF 2
SDBB VALVE for VBS 1F/S NONE
Instrument Isolation
GATE VALVE VBD 2SW VBD 2F
GLOBE VALVE VBD 3SW VBD 3F
CHECK VALVE (HOR) VBD 7SW VBD 4W
(VER) VBD 4W
PLUG VALVE NONE VBD 5F
BALL VALVE VBD 6SW VBD 6FF, VBD 6FR
VBD 6FF, VBD 6FR
NEEDLE VALVE VBD 9SW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 300 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK SS 316 OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 -40 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
740 PSIG 675 PSIG 655 PSIG 635 PSIG NACE MR-01-75
51,0 BAR G 46,5 BAR G 45,2 BAR G 43,8 BAR G
160 XS 40
MÆRSKMÆRSK
BD-7 SHEET 1 OF 2
SERVICE UTILITY SYSTEMS RATING 300 # FF PIPING SPEC REV
GALVANIZED CORROSION ALLOWANCE 0,05"(1.3mm) BG 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH)
PIPE SEAMLESS (T&C) ASTM A-106 GR B, SEAMLESS
ASTM A-53 GR B, 
FITTINGS [ 1,3 ] 2000 # SCREWED SEAMLESS BUTT WELD
ASTM A-105, GALVANIZED ASTM A-234 GR WPB
UNIONS [ 1,3 ] 2000# SCREWED INT SEATS NONE, USE FLANGES
ASTM A-105, GALVANIZED
PLUGS SOLID BAR STOCK, SCREWED NONE
ASTM A-105, GALVANIZED
FLANGES [ 1 ] 300# FF,SCREWED 300 # FF, WELDING NECK
ASTM A-105, GALVANIZED ASTM A-105
SDBB VALVE for VBS 1F/S NONE
Instrument Isolation
GATE VALVE VBG 2S NONE
GLOBE VALVE VBG 3S NONE
CHECK VALVE (HOR) VBG 7S VBS 4W
(VER) VBS 4W
PLUG VALVE NONE
BALL VALVE VBG 6S VBS 6FF, VBS 6FR
NEEDLE VALVE NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS 300 # CGF FULL FACE WITH BOLT HOLES 1,5 MM THICK
MISCELLANEOUS
ALL GALVANIZED ITEMS TO BE HOT DIPPED TO ISO 1461 OR EQUAL.. 3" THRU 24" NB PIPE SIZES TO BE GALVANIZED
AFTER FABRICATION.
WELDING ATTACHMENTS AFTER GALVANIZING ARE NOT PERMITTED.
THREAD DIMENSIONS TO CONFIRM WITH ANSI B1.20.1 OR API STD 5B (NPT). ¤
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 1210 8 6 4 3 2 1,5 1 0,75 0,5
0,5 TH TH TH TH TH TH TH TH TH TH TH SRT SRT SRT SRT ST
0,75 TH TH TH TH TH TH TH TH TH TH TH SRT SRT SRT ST
B 1 TH TH TH TH TH TH TH TH TH TH TH SRT SRT ST
R 1,5 TH TH TH TH TH TH TH TH TH TH TH SRT ST
A 2 TH TH TH TH TH TH TH TH TH TH TH ST
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) 3000# CAN SUBSTITUTE 2000# FITTINGS
24 T W = WELDOLET / WELDOFLANGE
TH = THREDOLET
RT = BUTT WELD REDUCING TEE
SRT = SCREWED REDUCING TEE
ST = SCREWED EQUAL TEE
DESIGN LIMITS CODE
 14 TO 150 DEG F 175 DEG F 200 DEG F ASME B31.3
 -10 TO 65 DEG C 79 DEG C 93 DEG C API RP 14 E
500 PSIG 490 PSIG 475 PSIG
34,5 BAR G 33,8 BARG 32,8 BARG
80, GALVANIZED 40
MÆRSKMÆRSK
BG-8 SHEET 1 OF 2
SERVICE SEAWATER RATING 300 # RF PIPING SPEC REV
SOUR PROCESS CORROSION ALLOWANCE NIL BM 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 10S ¤
PIPE SEAMLESS A-312-S31254 SEAMLESS ASTM A-312-S31254 / B-677-N08926 ¤
 B-677-N08926 WELDED ASTM A-358 S31254 Class 1 and 3 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 44 SEAMLESS BUTT WELD ASTM A-182 GR F 44 / A-403 WP-S S31254 ¤
OR A-403 WP-S S31254 WELDED BUTT WELD ASTM A-403 WP-WX S31254 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 300 # RF, WELDING NECK
ASTM A-182 GR F 44
SDBB VALVE for VBM 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VBM 3F VBM 3F
VBM 3BW
CHECK VALVE (HOR) VBM 7BW VBM 4W
(VER) VBM 4W
PLUG VALVE NONE VBM 5F
BALL VALVE VBM 6BW VBM 6FF, VBM 6FR
VBM 6FF, VBM 6FR
BUTTERFLY VALVE MAY BE USED ACCORDING TO COMPANY APPROVAL, (VBM 8W)
NEEDLE VALVE NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 300 # TYPE DUPLEX SS UNS S31803 SWSF, 3/16 IN. THICK , WITH 1/8 IN. THICK SS316 OUTER RING ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES (A-182 GR F44). ¤
HEADER SIZE (IN) ¤
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SPECIAL WALL FOR SS REF. ASME B36.10.
Z 14 W W W RT T
E 16 W W RT T LEGEND
18 W RT T
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C API RP 14 E
720 PSIG 635 PSIG NACE MR-01-75, WHERE APPLICABLE
49,6 BAR G 43,8 BAR G
20 [ NOTE 2 ]
MÆRSKMÆRSK
BM-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (-150 DEG F) RATING 300 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY SYSTEMS CORROSION ALLOWANCE NIL BS 7
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 10S 40S STD WT [ 2 ] XS [ 2 ]
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # SOCKET WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
ASTM A-182 GR F 316L WELDED BUTT WELD ASTM A-403 WP-WX 316L ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 300# RF SOCKET WELD 300 # RF, WELDING NECK
ASTM A-182 GR F 316L ASTM A-182 GR F 316L
SDBB VALVE for VBS 1F/S NONE
Instrument Isolation
BALL VALVE VBS 6SW VBS 6FF, VBS 6FR
VBS 6FF, VBS 6FR
GATE VALVE NONE
PLUG VALVE NONE VBS 5F
GLOBE VALVE VBS 3F VBS 3F
VBS 3SW
NEEDLE VALVE VBS 9SW/S NONE
CHECK VALVE (HOR) VBS 7SW VBS 4W
(VER) VBS 4W
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GBSKETS 300 # TYPE 316L SS SWSF, 3/16 IN. THICK WITH 1/8 IN. THICK SS 316 OUTER RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 S S S S S S S S S S S S RST RST RST ST
0,75 S S S S S S S S S S S S RST RST ST
B 1 S S S S S S S S S S S S RST ST
R 1,5 S S S S S S S S S S S S ST
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SPECIAL WALL FOR SS REF. ASME B36.10.
Z 14 W W W RT T
E 16 W W RT T LEGEND
18 W RT T
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
S = SOCKOLET
RT = BUTT WELD REDUCING TEE
RST = SOCKET WELD REDUCING TEE
ST = SOCKET WELD EQUAL TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
600 PSIG 505 PSIG 455 PSIG 415 PSIG NACE MR-01-75
41,4 BAR G 34,8 BAR G 31,4 BAR G 28,6 BAR G
MÆRSKMÆRSK
BS-7 SHEET 1 OF 2
SERVICE RATING 300 # RF PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL BX 3
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 10S
PIPE [ 3 ] SEAMLESS SEAMLESS ASTM A-790 S31803 ¤
ASTM A-790 S31803 WELDED ASTM A-790 S31803 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 51 SEAMLESS BUTT WELD ASTM A-182 GR F 51 / A-815 WP-S S31803 ¤
OR A-815 WP-S S31803 WELDED BUTT WELD ASTM A-815 WP-WX S31803 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1 ] 300 # RF, WELDING NECK
ASTM A-182 GR F 51
SDBB VALVE for VBX 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VBX 3F VBX 3F
VBX 3BW
CHECK VALVE (HOR) VBX 7BW VBX 4W
(VER) VBX 4W
PLUG VALVE NONE VBX 5F
BALL VALVE VBX 6BW VBX 6FF, VBX 6FR
VBX 6FF, VBX 6FR
NEEDLE VALVE NONE
SPECIAL NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS 300 # TYPE DUPLEX SS UNS S31803 SWSF, 3/16 IN. THICK , WITH 1/8 IN. THICK SS316 OUTER RING ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) STD WT. IS SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) WELDED PIPE SHALL BE 100% RADIOGRAPHED
18 W RT T IN ACC. WITH ASME VIII PARAGRAPH UW-51
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
720 PSIG 635 PSIG 590 PSIG 555 PSIG NACE MR-01-75
49,6 BAR G 43,8 BAR G 40,7 BAR G 38,3 BAR G
STD WT [ 2 ]
MÆRSKMÆRSK
BX-3 SHEET 1 OF 2
SERVICE RATING 600 # RTJ [NOTE 3] PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) DB 8
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 160 80
PIPEASTM A-106 GR B, SEAMLESS ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD FITTINGS SEAMLESS BUTT WELD
ASTM A-234 GR WPB ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 600 # RTJ, WELDING NECK 600 # RTJ, WELDING NECK
ASTM A-105 ASTM A-350 GR LF2
SDBB VALVE for VDS 1F/S NONE
Instrument Isolation
GATE VALVE VDB 2F VDB 2F
VDB 2BW
GLOBE VALVE VDB 3F VDB 3F
VDB 3BW
CHECK VALVE (HOR) VDB 7BW VDB 4W
(VER) VDB 4W
PLUG VALVE NONE VDD 5F
BALL VALVE VDD 6BW VDB 6FF, VDB 6FR
VDB 6FF, VDB 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS (RTJ) 600 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
1480 PSIG 1350 PSIG 1315 PSIG 1270 PSIG NACE MR-01-75
102,0 BAR G 93,1 BAR G 90,7 BAR G 87,6 BAR G
MÆRSKMÆRSK
DB-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 600 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) DD 8
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH)
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 600 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VDS 1F/S NONE
Instrument Isolation
GATE VALVE VDD 2F VDD 2F
VDD 2BW
GLOBE VALVE VDD 3F VDD 3F
VDD 3BW
CHECK VALVE (HOR) VDD 7BW VDD 4W
(VER) VDD 4W
PLUG VALVE NONE VDD 5F
BALL VALVE VDD 6BW VDD 6FF, VDD 6FR
VDD 6FF, VDD 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS (RTJ) 600 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -40 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
1480 PSIG 1350 PSIG 1315 PSIG 1270 PSIG NACE MR-01-75
102,0 BAR G 93,1 BAR G 90,7 BAR G 87,6 BAR G
160 80
MÆRSKMÆRSK
DD-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 150 DEG F) RATING 600 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL DS 9
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH) 40S 80S ¤
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # BUTT WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
WELDED BUTT WELD ASTM A-403 WP-WX 316L
¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 600 # RTJ, WELDING NECK
ASTM A-182 GR F 316L
SDBB VALVE for VDS 1F/S NONE
Instrument Isolation
GATE VALVE VDS 2F VDS 2F NONE
VDS 2BW
GLOBE VALVE VDS 3F VDS 3F
VDS 3BW
CHECK VALVE (HOR) VDS 7BW VDS 4W
(VER) VDS 4W
PLUG VALVE NONE VDS 5F
BALL VALVE VDS 6BW VDS 6FF, VDS 6FR
VDS 6FF, VDS 6FR
NEEDLE VALVE VGS 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) 600 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 60 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
1200 PSIG 1015 PSIG 910 PSIG 825 PSIG NACE MR-01-75
82.7 BAR G 70.0 BAR G 62.7 BAR G 56.9 BAR G
60 [ 2 ]
SMLS BW A-182 GR F 316L or 
A-403 WP-S 316L
MÆRSKMÆRSK
DS-9 SHEET 1 OF 2
SERVICE RATING 600# RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL DX 3
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) ¤
PIPE [ 4 ] SEAMLESS SEAMLESS ASTM A-790 S31803 ¤
ASTM A-790 S31803 WELDED ASTM A-790 S31803 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 51 SEAMLESS BUTT WELD ASTM A-182 GR F 51 / A-815 WP-S S31803 ¤
OR A-815 WP-S S31803 WELDED BUTT WELD ASTM A-815 WP-WX S31803 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 600 # RTJ, WELDING NECK
ASTM A-182 GR F 51
SDBB VALVE for VDX 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VDX 3F VDX 3F
VDX 3BW
CHECK VALVE (HOR) VDX 7BW VDX 4W
(VER) VDX 4W
PLUG VALVE NONE VDX 5F
BALL VALVE VDX 6BW VDX 6FF, VDX 6FR
VDX 6FF, VDX 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS (RTJ) OCTAGONAL RING TYPE R, ANNEALED UNS-N10276, HASTELOY C-276 OR EQ. MAX HARDNESS 200 HV ¤
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W WW W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 40 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 4) WELDED PIPE SHALL BE 100% RADIOGRAPHED
24 T W = WELDOLET / WELDOFLANGE IN ACC. WITH ASME VIII PARAGRAPH UW-51
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
1440 PSIG 1270 PSIG 1175 PSIG 1110 PSIG NACE MR-01-75
99,3 BAR G 87,6 BAR G 81,0 BAR G 76,5 BAR G
40S 40 [ NOTE 2 ]
MÆRSKMÆRSK
DX-3 SHEET 1 OF 2
SERVICE SOUR PROCESS AND RATING 900 # RTJ (NOTE 3 + 4) PIPING SPEC REV
UTILITY PIPING CORROSION ALLOWANCE 0,125"(3mm) EB 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) XXS 160 120
PIPE ASTM A-106 GR B, SEAMLESS ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD SEAMLESS BUTT WELD
ASTM A-234 GR WPB ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3,4 ] 1500#RTJ, WELDING NECK 900 # RTJ, WELDING 900 # RTJ, WELDING NECK
ASTM A-105 NECK, ASTM A-105 ASTM A-350 GR LF2
SDBB VALVE for VES 1F/S NONE
Instrument Isolation
GATE VALVE VFC 2BW, VFC 2F VEB 2BW, VEB 2F
GLOBE VALVE VFC 3BW, VFC 3F VEB 3BW, VEB 3F
CHECK VALVE (HOR) VFC 7BW VFC 4W(2" ONLY)) VEB 4W
(VER) VFC 4W(2" ONLY))
PLUG VALVE NONE VED 5F
BALL VALVE VFC 6BW, VFC 6FF, VFC 6FR VED 6BW, VEB 6FF, VEB 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS (RTJ) 900/1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N RT RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) NOMINAL FLANGE RATING 2" & SMALLER:
RT = BUTT WELD REDUCING TEE 1500 # RTJ
 NOMINAL FLANGE RATING 3" & LARGER:
 900 # RTJ
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
2220 PSIG 2025 PSIG 1970 PSIG 1900 PSIG NACE MR-01-75
153,1 BAR G 139,6 BAR G 135,8 BAR G 131,0 BAR G
MÆRSKMÆRSK
EB-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE ( - 40 DEG F) RATING 900 # RTJ (NOTE 3 + 4) PIPING SPEC REV
SOUR PROCESS AND UTILITY PIPING CORROSION ALLOWANCE 0,125"(3mm) ED 8
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) XXS 160 120
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3,4 ] 1500#RTJ, WELDING NECK 900 # RTJ, WELDING NECK
ASTM A-350 GR LF2 ASTM A-350 GR LF2
SDBB VALVE for VES 1F/S NONE
Instrument Isolation
GATE VALVE VFE 2BW, VFE 2F VED 2BW, VED 2F
GLOBE VALVE VFE 3BW, VFE 3F VED 3BW, VED 3F
CHECK VALVE (HOR) VFE 7BW VFE 4W(2" ONLY) VED 4W
(VER) VFE 4W(2" ONLY)
PLUG VALVE NONE VED 5F
BALL VALVE VFE 6BW, VFE 6FF, VFE 6FR VED 6BW, VED 6FF, VED 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS (RTJ) 900/1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N RT RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) NOMINAL FLANGE RATING 2" & SMALLER:
RT = BUTT WELD REDUCING TEE 1500 # RTJ
 NOMINAL FLANGE RATING 3" & LARGER:
 900 # RTJ
DESIGN LIMITS CODE
 -40 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
2220 PSIG 2025 PSIG 1970 PSIG 1900 PSIG NACE MR-01-75
153,1 BAR G 139,6 BAR G 135,8 BAR G 131,0 BAR G
MÆRSKMÆRSK
ED-8 SHEET 1 OF 2
SERVICE RATING 900 # RTJ (NOTE 3+4+5) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL EO 2
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,0 508,0 610,0
WALL THICKNESS [7] (SCH) 80S 60 [ NOTE 2 ] ¤
PIPE [ 6 ] SEAMLESS SEAMLESS ASTM A-790 S32750 / 32760 ¤
A-790 S32750 / 32760 WELDED ASTM A-928 S32750 / 32760 ¤
FITTINGS [ 1 ] SMLS, BW A-182 F 53/55 SEAMLESS BUTT WELD A-182 GR F 53/55 / A-815 WP-S S32750 / S32760 ¤
A-815 WP-S S32750 / 60 WELDED BUTT WELD ASTM A-815 WP-WX S32750 / S32760 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3,4 ] 1500#RTJ, WELDING NECK 900 # RTJ, WELDING NECK
ASTM A-182 GR F 53/55 ASTM A-182 GR F 53/55
SDBB VALVE for VFO 1F/S NONE
Instrument Isolation
GATE VALVE VFO 2BW, VFO 2F VEO 2F, VEO 2BW
GLOBE VALVE VFO 3F, VFO 3BW VEO 3F, VEO 3BW
CHECK VALVE (HOR) VFO 7BW VFO 4W(2" ONLY) VEO 4W
(VER) VFO 4W(2" ONLY) VEO 4W
PLUG VALVE NONE VEO 5F, VEO 5BW
BALL VALVE VFO 6BW, VFO 6FR, VFO 6FF VEO 6FF, VEO 6FR, VEO 6BW
NEEDLE VALVE VFO 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS ¤
GASKETS (RTJ) OCTAGONAL RING TYPE R, ANNEALED UNS-N10276, HASTELOY C-276 OR EQ.
(GRAYLOC) MAX. HARDNESS 200 HV, INCONEL X-750 SEAL RING
MISCELLANEOUS
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 60 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 4) NOMINAL FLANGE RATING 2" & SMALLER: 1500#
24 T W = WELDOLET / WELDOFLANGE NOMINAL FLANGE RATING 3" & LARGER: 900#
N = NIPOLET / NIPOFLANGE 5) USE UNS S32750,S32760 OR EQUAL. MIN BASIC
RT = BUTT WELD REDUCING TEE ALLOWABLE STRESS CALCULATED TO ASME
 B31.3 TO BE NOT LESS THAN 34 KSI AT 200°F.
6) WELDED PIPE SHALL BE A-928 CLASS 1, 3 OR 4.
 (100% RADIOGRAPH EXAMINATION)
DESIGN LIMITS CODE
 -20 TO 200 DEG F ASME B31.3
 -29 TO 93 DEG C API RP 14 E
2185 PSIG NACE MR-01-75
150,7 BAR G
40S
MÆRSKMÆRSK
EO-2 SHEET 1 OF 2
SERVICE LOW TEMPERATURE ( - 150 DEG F) RATING 900 # RTJ [NOTE 3 + 4] PIPING SPEC REV
 SOUR PROCESS AND UTILITY PIPING CORROSION ALLOWANCE NIL ES 8
SIZE NOMINAL (IN) 0.50 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH) 80S 100 [ 2 ] ¤
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # BUTT WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
WELDED BUTT WELD ASTM A-403 WP-WX 316L
¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK 900 # RTJ, WELDING NECK
ASTM A-182 GR F 316L ASTM A-182 GR F 316L
SDBB VALVE for VES 1F/S NONE
Instrument Isolation
GATE VALVE VFS 2BW, VFS 2F VES 2BW, VES 2F
GLOBE VALVE VFS 3BW, VFS 3F VES 3BW, VES 3F
CHECK VALVE (HOR) VFS 7BW VFS 4W (2" ONLY) VES 4W
(VER) VFS 4W (2" ONLY)
PLUG VALVE NONE VES 5F
BALL VALVE VFS 6BW, VFS 6FF, VFS 6FR VES 6BW, VES 6FF, VES 6FR
NEEDLE VALVE VGS 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) 900/1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N RT RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 100 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 4) NOMINAL FLANGE RATING 2" & SMALLER: 1500#
24 T W = WELDOLET / WELDOFLANGE NOMINAL FLANGE RATING 3" & LARGER: 900#
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
1800 PSIG 1520 PSIG 1360 PSIG 1240 PSIG NACE MR-01-75
124.1 BAR G 104.8 BAR G 93.8 BAR G 85.5 BAR G
40S
SMLS BW A-182 GR F 316L or 
A-403 WP-S 316L
MÆRSKMÆRSK
ES-8 SHEET 1 OF 2
SERVICE RATING 900 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL EX 2
SIZE NOMINAL (IN) 0,50 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,0 508,0 610,0
WALL THICKNESS (SCH) ¤
PIPE [ 5 ] SEAMLESS SEAMLESS ASTM A-790 S31803 ¤
ASTM A-790 S31803 WELDED ASTM A-928 S31803 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 51 SEAMLESS BUTT WELD ASTM A-182 GR F 51 / A-815 WP-S S31803 ¤
OR A-815 WP-S S31803 WELDED BUTT WELD ASTM A-815 WP-WX S31803 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500#RTJ, WELDING NECK 900 # RTJ, WELDING NECK
ASTM A-182 GR F 51 ASTM A-182 GR F 51
SDBB VALVE for VFX 1F/S NONE
Instrument Isolation
GATE VALVE VFX 2BW, VFX 2F VEX 2F, VEX 2BW
GLOBE VALVE VFX 3F, VFX 3BW VEX 3F, VEX 3BW
CHECK VALVE (HOR) VFX 7BW VFX 4W(2" ONLY) VEX 4W VEX 4F
(VER) VFX 4W(2" ONLY)
PLUG VALVE NONE VEX 5F, VEX 2BW
BALL VALVE VFX 6BW, VFX 6FR, VFX 6FF VEX 6FF, VEX 6FR, VEX 6BW
NEEDLE VALVE VFX 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) OCTAGONAL RING TYPE R, ANNEALED UNS-N10276, HASTELOY C-276 OR EQ.
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 60 AND 80 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 4) NOMINAL FLANGE RATING 2" & SMALLER: 1500#
24 T W = WELDOLET / WELDOFLANGE NOMINAL FLANGE RATING 3" & LARGER: 900#
N = NIPOLET / NIPOFLANGE 5) WELDED PIPE SHALL BE 100% RADIOGRAPHED
RT = BUTT WELD REDUCING TEE IN ACC. WITH ASME VIII PARAGRAPH UW-51
DESIGN LIMITS CODE
 -20 TO 300 DEG F ASME B31.3
 -29 TO 149 DEG C API RP 14 E
2185 PSIG NACE MR-01-75
150,7 BAR G
40S 80S 60 [ NOTE 2 ] 80 [ NOTE 2 ]
MÆRSKMÆRSK
EX-2 SHEET 1 OF 2
SERVICE RATING 1500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) FB 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH)
PIPE ASTM A-106 GR B, SEAMLESS ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD FITTINGS SEAMLESS BUTT WELD
ASTM A-234 GR WPB ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK 1500 # RTJ, WELDING NECK
ASTM A-105 ASTM A-350 GR LF2
SDBB VALVE for VFS 1F/S NONE
Instrument Isolation
GATE VALVE VFC 2F VFC 2F
VFC 2BW
GLOBE VALVE VFC 3F VFC 3F
VFC 3BW
CHECK VALVE (HOR) VFC 7BW VFC 7BW (2" ONLY), VFC 4W
(VER) VFC 4W
PLUG VALVE NONE VFE 5F
BALL VALVE VFC 6BW VFC 6FF, VFC 6FR
VFC 6FF, VFC 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED FBW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 -14 TO 278 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 136 DEG C 149 DEG C 204 DEG C API RP 14 E
3300 PSIG 3280 PSIG 3170 PSIG NACE MR-01-75
227.5 BAR G 226.1 BAR G 218.6 BAR G
XXS 160
MÆRSKMÆRSK
FB-8 SHEET 1 OF 2
SERVICE RATING 1500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) FC 5
SIZE NOMINAL (IN) 0.5 0.751 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) 1.00 1.22 1.40 1.55 1.75 1.92 2.12 2.52
PIPE ASTM A-106 GR B, SEAMLESS ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD FITTINGS SEAMLESS BUTT WELD
ASTM A-234 GR WPB ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK 1500 # RTJ, WELDING NECK
ASTM A-105 ASTM A-350 GR LF2
SDBB VALVE for VFS 1F/S NONE
Instrument Isolation
GATE VALVE VFC 2F VFC 2F
VFC 2BW
GLOBE VALVE VFC 3F VFC 3F
VFC 3BW
CHECK VALVE (HOR) VFC 7BW VFC 7BW (2" ONLY), VFC 4W
(VER) VFC 4W
PLUG VALVE NONE VFE5F
BALL VALVE VFC 6BW VFC 6FF, VFC 6FR
VFC 6FF, VFC 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED FCW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
3705 PSIG 3375 PSIG 3280 PSIG 3170 PSIG NACE MR-01-75
255.5 BAR G 232.7 BAR G 226.1 BAR G 218.6 BAR G
XXS
MÆRSKMÆRSK
FC-5 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 1500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) FD 8
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH)
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VFS 1F/S NONE
Instrument Isolation
GATE VALVE VFE 2F VFE 2F
VFE 2BW
GLOBE VALVE VFE 3F VFE 3F
VFE 3BW
CHECK VALVE (HOR) VFE 7BW VFE 7BW (2" ONLY), VFE 4W
(VER) VFE 4W
PLUG VALVE NONE VFE 5F
BALL VALVE VFE 6BW VFE 6FF, VFE 6FR
VFE 6FF, VFE 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS (RTJ) 1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -40 TO 278 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 136 DEG C 149 DEG C 204 DEG C API RP 14 E
3300 PSIG 3280 PSIG 3170 PSIG NACE MR-01-75
227,5 BAR G 226,1 BAR G 218,6 BAR G
160XXS
MÆRSKMÆRSK
FD-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 1500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) FE 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) 1.00 1.22 1.40 1.55 1.75 1.92 2.12 2.52
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VFS 1F/S NONE
Instrument Isolation
GATE VALVE VFE 2F VFE 2F
VFE 2BW
GLOBE VALVE VFE 3F VFE 3F
VFE 3BW
CHECK VALVE (HOR) VFE 7BW VFE 7BW (2" ONLY), VFE 4W
(VER) VFE 4W
PLUG VALVE NONE VFE 5F
BALL VALVE VFE 6BW VFE 6FF, VFE 6FR
VFE 6FF, VFE 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIALS FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED FEW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 -40 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -40 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
3705 PSIG 3375 PSIG 3280 PSIG 3170 PSIG NACE MR-01-75
255.5 BAR G 232.7 BAR G 226.1 BAR G 218.6 BAR G
XXS
MÆRSKMÆRSK
FE-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 150 DEG F) RATING 1500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL FS 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH)
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # BUTT WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
WELDED BUTT WELD ASTM A-403 WP-WX 316L
¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK
ASTM A-182 GR F 316L
SDBB VALVE for VFS 1F/S NONE
Instrument Isolation
GATE VALVE VFS 2F, VFS 2BW NONE
GLOBE VALVE VFS 3F VFS 3F
VFS 3BW
CHECK VALVE (HOR) VFS 7BW VFS 7BW (2" ONLY), VFS 4W
(VER) VFS 4W
PLUG VALVE NONE VFS 5F
BALL VALVE VFS 6BW VFS 6FF, VFS 6FR
VFS 6FF, VFS 6FR
NEEDLE VALVE VGS 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUDBOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) 1500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 160 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE
24 T W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
3000 PSIG 2530 PSIG 2270 PSIG 2065 PSIG NACE MR-01-75
206.8 BAR G 174.4 BAR G 156.5 BAR G 142.4 BAR G
160 [NOTE 2]
SMLS BW A-182 GR F 316L or 
A-403 WP-S 316L
MÆRSKMÆRSK
FS-8 SHEET 1 OF 2
SERVICE RATING 1500# RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL FX 2
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9 355,6 406,4 457,2 508,0 609,6
WALL THICKNESS (SCH) 40S 80S 120 [NOTE 2]
PIPE [ 4 ] SEAMLESS SEAMLESS ASTM A-790 S31803 ¤
ASTM A-790 S31803 WELDED ASTM A-928 S31803 ¤
FITTINGS [ 1 ] SMLS, BW A-182 GR F 51 SEAMLESS BUTT WELD ASTM A-182 GR F 51 / A-815 WP-S S31803 ¤
OR A-815 WP-S S31803 WELDED BUTT WELD ASTM A-815 WP-WX S31803 ¤
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 1500 # RTJ, WELDING NECK
ASTM A-182 GR F 51
SDBB VALVE for VFX 1F/S NONE
Instrument Isolation
GATE VALVE VFX 2BW VFX 2F
VFX 2F
GLOBE VALVE VFX 3F VFX 3F
VFX 3BW
CHECK VALVE (HOR) VFX 7BW VFX 4W, VFX 7BW ( 2" ONLY)
(VER) VFX 4W
PLUG VALVE NONE VFX 5F
BALL VALVE VFX 6BW VFX 6FF, VFX 6FR
VFX 6FF,VFX6FR
NEEDLE VALVE VFX 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) OCTAGONAL RING TYPE R, ANNEALED UNS-N10276, HASTELOY C-276 OR EQ.
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N N N N N N RT T
0,75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1,5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) SCH 120 IS A SPECIAL WALL THICKNESS
Z 14 W W W RT T FOR STAINLESS STEEL. USE ASME B36.10
E 16 W W RT T LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 W RT T BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 4) WELDED PIPE SHALL BE 100% RADIOGRAPHED
24 T W = WELDOLET / WELDOFLANGE IN ACC. WITH ASME VIII PARAGRAPH UW-51
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -14 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
3750 PSIG 3750 PSIG 3612 PSIG 3487 PSIG NACE MR-01-75
258,6 BAR G 258,6 BAR G 249,0 BAR G 240,4 BAR G
MÆRSKMÆRSK
FX-2 SHEET 1 OF 2
SERVICE RATING 2500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) GC 3
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) 0.93 1.17 1.42 1.65 1.80 2.04 2.27 2.51 2.98
PIPE ASTM A-106 GR B, SEAMLESS ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD FITTINGS SEAMLESS BUTT WELD
ASTM A-234 GR WPB ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK 2500 # RTJ, WELDING NECK
ASTM A-105 ASTM A-350 GR LF2
SDBB VALVE for VGS 1F/S NONE
Instrument Isolation
GATE VALVE VGF 2F, VGF 2BW
GLOBE VALVE VGF 3F VGF 3F
VGF 3BW
CHECK VALVE (HOR) VGF 7BW VGF 4W, VGF 7BW
(VER) VGF 4W
PLUG VALVE NONE VGF 5F
BALL VALVE VGF 6BW, VGF 6FF, VGF 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 2500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED GCW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 14 TO 400 DEG F ASME B31.3
 -10 TO 204 DEG C API RP 14 E
4500 PSIG NACE MR-01-75
310.3 BAR G
XXS
MÆRSKMÆRSK
GC-3 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 2500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) GD 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) XXS 1.02 1.25 1.44 1.57 1.77 1.97 2.17 2.58
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VGS 1F/S NONE
Instrument Isolation
GATE VALVE VGF 2F, VGF 2BW
GLOBE VALVE VGF 3F VGF 3F
VGF 3BW
CHECK VALVE (HOR) VGF 7BW VGF 4W, VGF 7BW
(VER) VGF 4W
PLUG VALVE NONE VGF 5F
BALL VALVE VGF 6BW, VGF 6FF, VGF 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 2500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED GDW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 -40 TO 400 DEG F ASME B31.3
 -40 TO 204 DEG C API RP 14 E
3800 PSIG NACE MR-01-75
262.0 BAR G
MÆRSKMÆRSK
GD-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 2500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) GE 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273 323.9 355.6 406.4 457.2 508 609.6
WALL THICKNESS (SCH/IN) XXS 0.93 1.17 1.42 1.65 1.80 2.04 2.27 2.51 2.98
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VGS 1F/S NONE
Instrument Isolation
GATE VALVE VGF 2F, VGF 2BW
GLOBE VALVE VGF 3F VGF 3F
VGF 3BW
CHECK VALVE (HOR) VGF 7BW VGF 4W, VGF 7BW
(VER) VGF 4W
PLUG VALVE NONE VGF 5F
BALL VALVE VGF 6BW, VGF 6FF, VGF 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 2500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED GEW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 -40 TO 400 DEG F ASME B31.3
 -40 TO 204 DEG C API RP 14 E
4500 PSIG NACE MR-01-75
310.3 BAR G
MÆRSKMÆRSK
GE-8 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 40 DEG F) RATING 2500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE 0.125"(3mm) GF 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) XXS 0.47 0.62 0.75 1.04 1.31 1.60 1.86 2.03 2.30 2.57 2.84 3.38
PIPE ASTM A-333 GR 6, SEAMLESS
FITTINGS [ 1 ] SEAMLESS BUTT WELD
ASTM A-420 GR WPL 6
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK
ASTM A-350 GR LF2
SDBB VALVE for VGS 1F/S NONE
Instrument Isolation
GATE VALVE VGF 2F, VGF 2BW
GLOBE VALVE VGF 3F VGF 3F
VGF 3BW
CHECK VALVE (HOR) VGF 7BW VGF 4W, VGF 7BW
(VER) VGF 4W
PLUG VALVE NONE VGF 5F
BALL VALVE VGF 6BW, VGF 6FF, VGF 6FR
NEEDLE VALVE VGF 9BW/S NONE
SPECIAL NONE
BOLTING [ 2 ] ASTM A-320 GR L7 STUD BOLTS C/W 2 ASTM A-194 GR 7, SF, HH, NUTS
HOT DIP GALVANIZED TO ASTM A-123
GASKETS [ 4 ] (RTJ) 2500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N N N N N N RT T
0.75 N N N N N N N N N N N N N RT T
B 1 N N N N N N N N N N N N RT T
R 1.5 N N N N N N N N N N N RT T
A 2 W W W W W W W W W W RT T
N 3 W W W W W W W W W RT T
C 4 W W W W W W W W RT T
H 6 W W W W W W W RT T NOTES ¤
 8 W W W W W W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 W W W W W RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 W W W W RT T 2) IN CASE OF SS THERMOWELL/SDBB
Z 14 W W W RT T VALVES UNS S32760 FLT STUDBOLTS OR
E 16 W W RT T LEGEND EQ., C/W 2 UNS S32760, SF, HH NUTS
18 W RT T TO BE USED.
(IN) 20 RT T T = BUTT WELD EQUAL TEE 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
24 T W = WELDOLET / WELDOFLANGE BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
N = NIPOLET / NIPOFLANGE 4) WHEN SPEC. IS MARKED GFW, THE GASKET 
RT = BUTT WELD REDUCING TEE SHALL BE SOFT IRON MAX. HB 160. 
 NO CLADDING TO BE PERFORMED IN THE 
 FLANGE GASKET GROOVE.
DESIGN LIMITS CODE
 -40 TO 400 DEG F ASME B31.3
 -40 TO 204 DEG C API RP 14 E
5200 PSIG NACE MR-01-75
358.5 BAR G
MÆRSKMÆRSK
GF-8 SHEET 1 OF 2
SERVICE RATING 2500 # RTJ (NOTE 3, 4, 5) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL GO 3
SIZE NOMINAL (IN) 0,5 0,75 1 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21,3 26,7 33,4 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9
WALL THICKNESS (SCH) 40S 80S 0,48 0,62 0,77 0,92
PIPE [ 5 ] SEAMLESS SEAMLESS ASTM A-790 S32750 / 32760
A-790 S32750 / 32760 WELDED ASTM A-928 S32750 / 32760
FITTINGS [ 1 ] SMLS, BW A-182 F 53/55 SMLS, BW A-182 GR F 53/55 / A-815 WP-S S32750 / S32760
A-815 WP-S S32750 / 60 WELDED BW A-815 WP-WX S32750 / S32760
UNIONS NONE, USE FLANGES
PLUGS NONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK ASTM A-182 GR F 53/55
SDBB VALVE for VGO 1F/S NONE
Instrument Isolation
GATE VALVE VGO 2F, VGO 2BW
GLOBE VALVE VGO 3F VGO 3F
VGO 3BW
CHECK VALVE (HOR) VGO 7BW VGO 4W
(VER) VGO 4W
PLUG VALVE NONE
BALL VALVE VGO 6BW VGO 6FF, VGO 6FR
VGO 6FF
NEEDLE VALVE VGO 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 SA STUD BOLTS OR EQUIVALENT ¤
C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) OCTAGONAL RING TYPE R, ANNEALED UNS-N10276, HASTELOY C-276 OR EQ.
(GRAYLOC) MAX. HARDNESS 200 HV, INCONEL X-750 SEAL RING ¤
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1 0,75 0,5
0,5 N N N N N N N N N RT T
0,75 N N N N N N N N RT T
B 1 N N N N N N N RT T
R 1,5 N N N N N N RT T
A 2 W W W W W RT T
N 3 W W W W RT T
C 4 W W W RT T
H 6 W W RT T NOTES ¤
 8 W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 T 2) SCH 60 IS A SPECIAL WALL THICKNESS
Z 14 FOR STAINLESS STEEL. USE ASME B36.10
E 16 LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 T= BUTT WELD EQUAL TEE 4) USE UNS S32750, S32760 OR EQUAL. MIN BASIC
24 W= WELDOLET / WELDOFLANGE ALLOWABLE STRESS CALCULATED TO ASME
N = NIPOLET / NIPOFLANGE B31.3 TO BE NOT LESS THAN:
RT = BUTT WELD REDUCING TEE 100 DEG F 200 DEG F 300 DEG F
35,3 KSI 34,0 KSI 33,0 KSI
5) WELDED PIPE SHALL BE A-928 CLASS 1, 3 OR 4.
 (100% RADIOGRAPH EXAMINATION)
DESIGN LIMITS CODE
14 TO 100 DEG F 200 DEG F 300 DEG F ASME B31.3
 -10 TO 38 DEG C 93 DEG C 149 DEG C API RP 14 E
4650 PSIG 4478 PSIG 4347 PSIG NACE MR-01-75
320,6 BAR G 308,7 BAR G 299,7 BAR G
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GO-3 SHEET 1 OF 2
SERVICE LOW TEMPERATURE (- 150 DEG F) RATING 2500 # RTJ (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL GS 8
SIZE NOMINAL (IN) 0.5 0.75 1 1.5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 21.3 26.7 33.4 48.3 60.3 88.9 114.3 168.3 219.1 273.0 323.9 355.6 406.4 457.2 508.0 609.6
WALL THICKNESS (SCH/IN) 160 [ 2 ] XXS [ 2 ] 0.69 1.02 1.32 1.65 1.95
PIPE SEAMLESS SEAMLESS ASTM A-312 TP316L ¤
ASTM A-312 TP316L WELDED ASTM A-358 GR 316L Class 1 and 3 ¤
FITTINGS [ 1 ] 3000 # BUTT WELD SEAMLESS BUTT WELD ASTM A-182 GR F 316L / A-403 WP-S 316L ¤
WELDED BUTT WELD ASTM A-403 WP-WX 316L
¤
UNIONS NONE, USE FLANGES
PLUGSNONE
FLANGES [ 1,3 ] 2500 # RTJ, WELDING NECK
ASTM A-182 GR F 316L
SDBB VALVE for VGS 1F/S NONE
Instrument Isolation
GATE VALVE NONE
GLOBE VALVE VGS 3F VGS 3F
VGS 3BW
CHECK VALVE (HOR) VGS 7BW VGS 4W, VGS 7BW
(VER) VGS 4W
PLUG VALVE NONE
BALL VALVE VGS 6BW, VGS 6FF, VGS 6FR
NEEDLE VALVE VGS 9BW/S NONE
SPECIAL NONE
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (RTJ) 2500 # OCTAGONAL RING TYPE R, ANNEALED 316 SS
(GRAYLOC) 17/4 PH PTFE COATED, SEAL RING OR EQUIVALENT
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR FLANGES.
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1.5 1 0.75 0.5
0.5 N N N N N N N N N RT T
0.75 N N N N N N N N RT T
B 1 N N N N N N N RT T
R 1.5 N N N N N N RT T
A 2 W W W W W RT T
N 3 W W W W RT T
C 4 W W W RT T
H 6 W W RT T NOTES ¤
 8 W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 T 2) SCH 160 IS A SPECIAL WALL THICKNESS
Z 14 FOR STAINLESS STEEL. USE ASME B36.10
E 16 LEGEND 3) ANSI B16.5 FLANGES MAY BE SUBSTITUTED
18 BY GRAYLOC HUBS/FLANGES OR EQUIVAL.
(IN) 20 T = BUTT WELD EQUAL TEE
24 W = WELDOLET / WELDOFLANGE
N = NIPOLET / NIPOFLANGE
RT = BUTT WELD REDUCING TEE
DESIGN LIMITS CODE
 -150 TO 100 DEG F 200 DEG F 300 DEG F 400 DEG F ASME B31.3
 -101 TO 38 DEG C 93 DEG C 149 DEG C 204 DEG C API RP 14 E
5000 PSIG 4220 PSIG 3780 PSIG 3440 PSIG NACE MR-01-75
344.7 BAR G 291.0 BAR G 260.6 BAR G 237.2 BAR G
SMLS BW A-182 GR F 316L or 
A-403 WP-S 316L
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GS-8 SHEET 1 OF 2
SERVICE SPECIAL HIGH PRESSURE RATING 9000 # SPECIAL (NOTE 3) PIPING SPEC REV
SOUR PROCESS AND UTILITY CORROSION ALLOWANCE NIL HO 2
SIZE NOMINAL (IN) 1,5 2 3 4 6 8 10 12 14 16 18 20 24
ACTUAL (OD) (MM) 48,3 60,3 88,9 114,3 168,3 219,1 273,0 323,9
WALL THICKNESS (SCH) XXS [ 2 ] 0,94 1,22 1,52 1,80
PIPE [ 4 ] SEAMLESS SEAMLESS ASTM A-790 S32750 / 32760 ¤
A-790 S32750 / 32760 WELDED ASTM A-928 S32750 / 32760 ¤
FITTINGS [ 1 ] SMLS, BW A-182 F 53/55 SMLS, BW A-182 GR F 53/55 / A-815 WP-S S32750 / S32760 ¤
A-815 WP-S S32750 / 60 WELDED BW A-815 WP-WX S32750 / S32760 ¤
UNIONS NONE
PLUGS NONE
FLANGES [ 1 ] NONE, USE GRAYLOC CONNECTORS IN A-182 GR F 53/55 ¤
SDBB VALVE for VHO 1G/S
Instrument Isolation
GATE VALVE VHO 2G
GLOBE VALVE NONE
CHECK VALVE (HOR) VHO 4G
(VER) VHO 4G
PLUG VALVE NONE
BALL VALVE VHO 6G
NEEDLE VALVE VHO 9G/S (1" ONLY)
SPECIAL
BOLTING UNS S32760 FLT STUD BOLTS OR EQUIVALENT C/W 2 UNS S32760, SF, HH, NUTS
GASKETS (GRAYLOC) MAX. HARDNESS 200 HV, INCONEL X-750 SEAL RING
MISCELLANEOUS
MATERIAL FOR O'LETS TO BE AS SPECIFIED FOR GRAYLOCS. ¤
HEADER SIZE (IN)
24 20 18 16 14 12 10 8 6 4 3 2 1,5 1
0,5
0,75
B 1 N N N N N N N RT T 
R 1,5 N N N N N N RT T
A 2 W W W W W RT T
N 3 W W W W RT T
C 4 W W W RT T
H 6 W W RT T NOTES ¤
 8 W RT T 1) BRANCH CONNECTIONS FOR THERMO-
S 10 RT T WELLS TO COMPLY WITH ATTACHMENT 4.
I 12 T 2) SCH XXS AND 160 ARE SPECIAL WALL THICK-
Z 14 NESS FOR STAINLESS STEEL. USE ASME B36.10
E 16 LEGEND 3) USE UNS S32750, S32760 OR EQUAL. MIN BASIC
18 ALLOWABLE STRESS CALCULATED TO ASME
(IN) 20 T = BUTT WELD EQUAL TEE B31.3 TO BE NOT LESS THAN:
24 W = WELDOLET / WELDOFLANGE 33,0 KSI AT 300 DEG F
N = NIPOLET / NIPOFLANGE 4) WELDED PIPE SHALL BE A-928 CLASS 1, 3 OR 4.
RT = BUTT WELD REDUCING TEE (100% RADIOGRAPH EXAMINATION)
DESIGN LIMITS CODE
 -20 TO 300 DEG F ASME B31.3
 -29 TO 149 DEG C API RP 14 E
9000 PSIG NACE MR-01-75
620,5 BAR G
1
33,4
160 [ 2 ]
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HO-2 SHEET 1 OF 2