VALVE CODES AND STANDARDS

ANSI -American National Standards Institute

B16.34: “Valves - Flanged, Threaded, and Welding End”

·        Design basis for all kinds of valves, including pressure-temperature ratings, dimensions, materials, and testing.

·        Cast and forged flanged, threaded, and welding end valves.

·        Class 150 thru Class 4500.

B16.10: “Face-to-Face and End-to-End Dimensions of Valves”

·        Face-to-Face dimensions for flanged end valves and end-to-end dimensions for welding end valves.

·        Gate, globe, angle, check, plug, and ball valves.

·        Class 150 thru Class 2500.

B 16.5: “Pipe Flanges and Flanged Fittings”

·        Design basis for all kinds of flanges such as raised face, ring joint face, tongue and groove face.

·        Class 150 thru 2500, NPS (Nominal Pipe Size) 1/2" thru 24"

  

API - American Petroleum Institute

600: “Bolted Bonnet Steel Gate Valve for Petroleum and Natural Gas Industries”

·        Specific and detailed design requirements.

·        1”-24” Sizes, Class 150 thru 2500 flange and butt welding ends.

602: "Compact Steel Gate Valves - Flanged, Threaded, Welding, and Extended-Body Ends"

Specific and detailed design requirements for compact gate valves.

2 1/2" and smaller, Class 800 and 1500, threaded and socket ends.

 4" and small, Class 150 thru 1500, flanged and butt welding ends.

Cast and forged, Carbon Steel and Stainless Steel.

598: "Valve Inspection and Testing"

·        Pressure test requirements and acceptance criteria for shell, backseat, and closure tests.

MSS - Manufacturers Standardization Society of Valve and Fittings Industry

SP-61: "Pressure Testing of Steel Valves"

                            

·        Requirements and acceptance criteria for shell and seat closure pressure testing of steel valves.

SP-25: "Standard Marking System for Valves, Fittings, Flanges, and Unions"

·        Requirements for marking on nameplate and valve body

SP-55: "Quality Standard for Steel Castings for Valves, Flanges and Fittings, and other piping components. – Visual Methods"

·        Reference photographs of casting surface irregularities.

SP-117: "Bellows Seals for Globe and Gate Valves"

·        Reference requirements for design, materials, fabrication, installation, qualification and testing of bellows/assemblies for gate and globe valves.