DGV pressure seal swing check valves are designed for high temperature, high pressure services mainly used in nuclear
and fossil fuel power plant, refinery, petrochemical, etc. Compare with bolted bonnet gate valves, DGV pressure seal swing
check valves are less complicated and can provide absolute excellent seal service with minimum maintenance.

Applicable Standard
Design Standard:      BS 1868, ASME B16.34, API 6D
Face to Face:          ASME B16.10, API 6D, EN 558, DIN3202
End Flange:             ASME B16.5, DIN 2501
Buttwelding Ends:    ASME B16.25
Inspection and Test: API 598

Products Range
Size:                     2" ~ 24"(DN50 ~ DN600)
Rating:                  ANSI 600lb ~ 2500lb
Body Materials:     Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
Trim:                     Per API 600

Design Features
Full open design
PSB, pressure sealed bonnet
Absolute bonnet joint leak proof
Stellited sealing surface
Swing type disc design
Renewable or and welded seat
Flanged or buttwelding ends