cast steel check valve

 Description:

STONG  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 overlaid 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.
 
Applicable Standard
 
Design Standard:   BS ***8, ASME B*6.*4, API 6D, DIN***3
Face to Face:   ASME B*6.*0, API 6D, EN **8, DIN ***2
End Flange:     ASME B*6.5, ASME B*6.*7, DIN***1, DIN***3
Buttwelding Ends:    ASME B*6.*5, DIN***9
Inspection and Test: API **8, DIN***0
Products Range
Size:  2" ~ *4" (DN*0 ~ DN**0)
Rating:       ANSI **0lb***0lb                     
Body Materials:      Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
Trim:   Per API **0

Design Features
Full open design
Bolted cover.
Swing type disc design
Optional buffering damp structure
Flanged or buttwelding ends