Product overview 

Features of Cast Steel Pressure Seal Check Valves:
Swing Disc Design
Pressure Seal Cover
Internal Hinge Pin Design Standard
Through-body Hinge Pin Design Available
Flanged or Butt-welding Ends
Extra Lever, Counter Weight and Damper Available


Applicable Standards of Cast Steel Pressure Seal Check Valves:
a) Design&Manufacture:API 6D, BS 1868, ASME B16.34
b) Face to Face: API 6D, ASME B16.10, EN 558
c) Connection End: ASME B16.5, ASME B16.25, EN 1092, JIS B2220
d) Test and Inspection: API 6D, EN 12266, API 598, BS 6755


Sizes: 2" - 36" or DN50 - DN900
Pressure Rating: Class150 - Class2500 or PN16 - PN420
Material of Valve Body: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M, etc.