Technical specification:
Design: wafer type double plate check valve with spring
End connection: wafer end
Medium: Water,
Temperature range: -20℃ to 120℃.
Design standard: API 6D
Flange standard: ANSI 125, ANSI 150, DIN PN10, PN16, PN25 or customer need
Test standard: API 598
Function: To avoid the fulid flow back
 
Application:
Petroleum industry, Shipbuilding industry, Urban water supply and drainage pipeline, etc.
 
Material
Body: Ductile cast iron, cast iron,
Disc: SS 304, SS316, Ductile cast iron, Aluminum-bronze
Stem: SS316, SS410, SS416, SS304, SS 17-4PH
Seat: NBR, EPDM, VITON, high temperature EPDM, Food grade EPDM
Spring: SS304, SS316
 
Surface treatment:
Epoxy resin coating both inside and outside the bodyMarine check valve
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