API 600 602 603 API 6D Class150lb Forged Flanged Ends Cast Steel Gate Valve

Design and Manufacture: Cast steel gate vlave to API 600(ISO 10434) or API 6D, cast stainless steel gate valve to API 603 or API 600; Forged steel gate valve to API 602

Inspection and Test: ASME B16.5(for NPS≤24); ASME B16.47 series B, API 605 or ASME B16.47 series A, MSS SP-44 (for NPS bigger than 24)

End flange dimension: API 598, API 600 or API 6D
BW end dimension: ASME B16.25
Socket-weld dimension: ASME B16.11
Face to face and end to end: ASME B16.10
Pressure-temperature ratings: ASME B16.34
Design of Disc: Gate valves with NPS ≥2 are of wedge flexible gate, Gate valves with NPS smaller than 2 are of wedge solid gate.