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Forged Steel Lift Check Valve, Class 800

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Forged Steel High-Pressure Valves

Forged steel valves for high-pressure small-bore duty: gate, globe and check, Class 800 to Class 2500, to API 602 / ASME B16.34, in A105, LF2, F5, F11, F22, F304(L), F316(L), F321 and F347. Images are representative renderings of each series; finish, accessories and nameplate follow the confirmed drawing.

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A check valve with a welded body has one advantage over every other build: there is no stem packing to leak to atmosphere. The piston lift disc rises off its seat on forward flow and drops back on reverse, so it suits lines where backflow would damage a pump, a meter or a boiler feed line. The lift type is the compact choice for small-bore high-pressure work — it needs less room than a swing check and can sit in any orientation. Forged A105 body, bolted bonnet, socket-weld or threaded ends; a ball-disc variant is available on request.

General Specifications

Size RangeNPS 1/2" – 4"
Pressure RatingClass 800
Design StandardAPI 602 / ASME B16.34
End ConnectionSocket weld ASME B16.11, butt weld ASME B16.25, threaded ASME B1.20.1
DiscPiston lift disc, ball disc on request
MediaWater, steam, oil, gas
Max. Working Temperature425 °C (A105)

Materials & Coating

Body / BonnetA105, F5, F11, F22, F304, F316
DiscPiston lift disc, ball disc on request
SeatIntegral metal seat
GasketSpiral wound, graphite filled

Applications

Pump discharge protection Boiler feedwater High-pressure manifolds Meter protection

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