Forged Steel Check Valve

A105, F304, F316, A350

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Forged Steel Check Valve Descriptions

Forged steel check valve is the most common type of non return valve in the oil & gas filed and power plant, because they can be applicable to water, oil, gas and steam with high temperature and high pressure. Flowspec forged steel check valve includes lift check valve, swing check valve and Y type check valve, which is available with materials of steel ASTM A105N, alloy steel A182 F11, A182 F22, stainless steel A182 F304/L, A182 F316/L, A182 F5, duplex s.s. A182 F51, low temperature steel A350 LF2, with ends connection of socket welded, butt-welded, threaded, welded flanged and intergral flanged. Luokai can manufacture the forged steel check valve in accordance with API602, BS5352 and ISO15761. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.


  • Full port or conventional port
  • B.C., bolted cover
  • Pressure seal bonnet or welded bonnet available
  • Body guided disc
  • Spiral wound gasket or ring joint gasket
  • Piston type are standard, swing disc style available
  • Uni-directional


  • Design & manufacturing: API602, ASME B16.34 / BS5352
  • Face to face: manufacturer’s, ASME B16.10
  • Socket welded: ASME B16.11
  • Threaded ends: NPT ASME B1.20.1
  • Butt-welded: ASME B16.25
  • Flanged ends: ANSI B16.5 RF
  • Inspection & testing: API598
  • Fugitive emission class: B
  • FE testing: MESC 77/312, ISO15848-2
  • TAT: MESC 77/300


  • 150LB~2500LB
  • Size: 1/4″~2″ (DN6~50mm)
  • Materials: steel (A105), alloy steel (A182 F11, F22, F5), stainless steel(A182 F304/L, F316/L), duplex s.s.(A182 F51), low temperature steel(A350 LF2)
  • Applicable medium: water, oil, gas, steam
  • Applicable temperature: -29℃~+425℃(higher temperature and lower temperature are available)
  • Sour service conditions: NACE MR-01-75


  • Petroleum industry
  • Oil & gas
  • Power plant
  • Chemical industry
  • Textile
  • Printing & dyeing
  • Steel plant
  • Metallurgical plant

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