Below is a listing of the basic specifications used in the design and manufacture of valves and fittings. 

American Petroleum Institute 

API Q1 Specification for quality programs 

API 6D Specification for pipeline valves 

API 6FA Fire test for valves 

API 598 Valve inspection and testing 

API 600 Steel gate valves, flanged and buttwelding ends, bolted and pressure seal bonnets 

API 602 Compact steel gate valves – flanged, threaded, welding, and extended body ends 

API 607 Fire test for soft seated quarter turn valves 

API 608 Metal ball valves – flanged and butt welding ends

American Society of Mechanical Engineers/American National Standards Institute 

ASME/ANSI B16.34 Valves – flanged, threaded and welding end 

ASME/ANSI B16.5 Pipe flanges and flanged fittings 

ASME/ANSI B16.10 Face-to-face and end-to-end dimensions of valves 

ASME/ANSI B16.11 Forged fittings, socket-welding and threaded 

ASME/ANSI B16.25 Butt welding ends

ASME/ANSI B16.47 Large diameter steel flanges Note: This specification for flanges larger than 24″ replaces MSS SP-44 and API 605 with the designations of Series A (MSS SP-44) and Series B (API 605).

ASME B31.3 Chemical plant and petroleum refinery piping

ANSI B31.4 Liquid petroleum transportation piping system

ANSI B31.8 Gas transmission and distribution piping system

Manufacturers Standardization Society of the Valves and Fittings Industry

MSS SP-25 Standard marking system for valves, fittings, flanges and unions

MSS SP-55 Quality standard for steel castings for valves, flanges, and fittings, and other piping components – visual method

MSS SP-70 Cast iron gate valves, flanged and threaded ends

MSS SP-71 Cast iron swing check valves, flanged and threaded ends

MSS SP-79 Socket-welding reducer inserts

MSS SP-80 Bronze gate, globe, angle and check valves

MSS SP-83 Class 3000 steel pipe unions, socket-welding and threaded

MSS SP-85 Cast iron globe and angle valves, flanged and threaded ends

National Association of Corrosion Engineers

NACE MR0175 Standard material requirements for sulfide stress cracking resistant metallic materials for oilfield equipment.

British Standards Institute

BSI 1414 Steel wedge gate valves (flanged and butt welding ends) for the petroleum, petrochemical, and allied industries

BSI 1868 Steel check valves (flanged and butt welding ends) for the petroleum, petrochemical, and allied industries

BSI 1873 Steel globe and globe stop and check valves (flanged and butt welding ends) for the petroleum, petrochemical, and allied industries

BSI 5352 Steel wedge gate, globe and check valves 50 mm and smaller for the petroleum, petrochemical, and allied industries

International Organization for Standardization

ISO 9001/9002 Quality system – Model for Quality Assurance

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