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Cast Check Valve

Jul 20, 2019
Basic Info
  • Material: WCB, WCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, DUPLEX SS, MONEL, ALLOY 20, CAST IRON etc

  • Structure: Swing

  • Function: Prevent media countercurrent 

  • Application: Industrial Usage, Water Industrial Usage, Household Usage.Light Industrial Usage and so on .

  • Origin: China

  • Connection Form: Flange

  • Pressure: Ordinary Temperature

  • Standard: ANSI

  • Trademark: NIPO

Product Description
API Check Valve
Cast Steel Swing Check Valves
Standard compliance
1) Design and manufacture: API6D,API594,JB/T8937
2) Test and inspection: API598
3) Face to face dimensions: API594,API6D,DIN3202,JB/T8937
4) Flanged end: ASME B16.34

Swing Check Valve Features:

The valve is closed by the reversing flow medium and the weight . The valve is closed by two stages of quick and slow closing which prevents the pump from
Turning back and superhigh water hammer pressure. The weight on the shaft balance the force during opening to reduce the flow resistance
This kind of valves are automatic type which are opened by the pressure of the medium and closed by the reversing flow. The water hammer rising has been taken into consideration during design so it is reliable.


1) Size:1/2"-72"

2) Class: 150LB to 2500LB

3) Type: Bolted Cover, Swing Disc, Threaded or Welded seat ring
4) Material: WCB, WCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, DUPLEX SS, MONEL, ALLOY 20, CAST IRON etc
5) Operation: Lever with counterweight(option)

Main features and applications:

1. Products using pin axis structure of built-in type, reduce leakage, the use of more reliable.

2. Valve disc rotate around the valve seat outside the axis, reduce the impact of the closure, suitable for horizontal or vertical installation.

3. Product design and manufacture according to API standard, reliable sealing, good performance, and can be used with imported equipment.

Standard materials of parts 
1BodyATM A216 WCB
2Seat ringASTM A105 + 13Cr
3DiscASTM A216 WCB + 13Cr
4Disc nutASTM A182 F6
5HingeASTM A216 WCB
6Hinge pinASTM A182 F6
7GasketStainless steel and graphite spiral wound
8CoverASTM A216 WCB
9Cover boltASTM A193 B7
10Cover nutASTM A194 2H