Product Description

Design Standard: API 6D/ BS***8 Face to Face: ASME B*6.*0/API 6D End Flange: ASME B*6.5/ASME B*6.*7 Buttwelding Ends: ASME B*6.*5 Inspection and Test: API **8/API6D Products Range Size ***0inch Pressure: class*******0lb Material: WCB, LCB, CF8, CF8M, CF3, CF3M, CN7M, CD4MCu, CK3MCuN, ect Trim: Per API **0 Design Features Full open design Bolted cover or Pressure seal cover Swing type disc design Optional buffering damp structure Renewable or and welded seat Flanged or buttwelding ends cast steel swing check valves are widely used in the industries of oil, chemical, medicine-made, fertilizer, city construction, etc. The swing type check valve is designed as full bore full open structure in order to clean the pipeline; large size check valve can be designed as buffering damp structure in order to protect seat seal surface and reduce the damage of pipeline at water hammer status. Seat seal surface overlayed with wearing resistant hardened alloy to be matched with disc seal surface; the stem is specially treated to ensure its strength, rigidity, corrosion resistance and abrasion resistance. Valves are available in a complete range of body/bonnet materials and trims, which are widely used for the medium of water, steam, oil product, nitric acid, acetic acid, oxygenation, etc.