Detailed Product Description

Swing Check Valve

DGV 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.

Applicable Standard.

Design Standard:     BS1868, ASME B16.34, API 6D

Face to Face:         ASME B16.10, API 6D, EN 558, DIN 3202

End Flange:            ASME B16.5, ASME B16.47, DIN2501

Buttwelding Ends:   ASME B16.25

Inspection and Test: API 598

Products Range

Size:                     2" ~ 36" (DN50 ~ DN900)

Rating:                 ANSI 150lb ~ 2500lb

Body Materials:     Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Trim:                     Per API 600

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.