Oil and gas wellhead valves

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Oil, natural gas wellhead valves used mainly to comply with the U.S. API 6A standard single gate or double plate, diversion hole or without diversion hole of Forged parallel gate valve, mud valve, angle of throttle, oil parallel valve, oilfield special straight-through check valve, water \ polymer parallel to the gate solenoid control valve , clamp parallel to the valve, pilot safety valve and check flow control valves .
Oil, natural gas wellhead valve of the nominal level API 2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi; public nominal diameter DN46 ~ 228mm (113/16in ~ 9in); temperature grades K (-60 ~ 182 ℃ ), L (-42 to 182 ℃), P (-29 to 182 ℃), R (room temperature), S (-18 to 166 ° C), T (-18 to 182 ° C), U (-18 to 121 ° C ), V (2 to 121 ° C); material requirements for the AA, BB, the CC, and DD, EE, FF, HH; material performance requirements according to 36K, 45K, 60K, 75K; product technical requirements according to PSL1 (product specification Level 1) , PSL2 (product hierarchy of norms), PSL3 (product h ierarchy of norms), PSL4 (product specification Level 4).