ANSI Swing Flange Check Valve

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Product Description

ANSI Swing Flange Check Valve

Standard: Design API 6D
Flanged Dimension : ASME B16.5
Face to face : API6D
Test & inspection : API 598 / API 6D
Materials: Carbon Steel, Forged Steel, Stainless Steel ,CF8, CF8M, CF3, CF3M
Working Pressure: PN10~PN40
Suitable Medium: Water, Natural Gas, Oil and some corrosive liquid

Bolted Cover
Piston Lift Disc, Full Bore Design
Renewable Seat Rings / Integral Seat Rings.
Spring Loading Disc
Horizontal Servece

Body-To-Bonnet Joint
Stainlesssteel + flesible graphite wounded gasket is used for Class 150 andClass 300 check valve; Stainless steel + flexible graphite woundedgasket is used for Class 600 check valve, and joint gasket is alsooptional for Class 600 check valve; Ring joint gasket is used forClass900 check valve; Pressurized seal design is used for Class1500~Class 2500 check valves

Body and Bonnet Connection
The body and bonnet of Class150~Class900 check valves are usually withstuds and nuts. And the body and bonnet of Class1500~Class2500 checkvalves are usually of pressurized seal design.
For carbon steel check valve, the seat is usually forged steel. Thesealing surface of the seat is spray welded with hard alloy specified bythe customer. Renewable threaded seat is used for NPS<10 and="" welded="" on="" seat="" can="" be="" also="" optional="" if="" being="" requested="" bythe="" customer.="" is="" used="" for="" nps="">12 crbon steel gatevalves. Forstainless steel check valve, integral seat is usuallyadopted, or to weld hard alloy directly integrally. Threaded or weldedon seat is also optional for stainless steel check valve if beingrequested by the customer.

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