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Short Description:

Double disc check valve ,double door check valve

DN50-DN1200,2″-48″

PN10/PN16/PN25/PN40/PN63/PN100,Class150/300/600/900/1500/2500

Face to face to API594/ISO5752/EN558-1 series 16

NORTECH is one of the leading China Double disc check valve Manufacturer & Supplier.


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What's double disc check valve ?

 Double disc check valve  is an all purpose non return valve that is much stronger, lighter in weight and smaller in size compared to a conventional swing check valve or life check valve.

The double disc check valve employs two spring-loaded plated hinged on a central hinge pin. When the flow decreases, the plates close by torsion spring action without requiring reverse flow.This design offers the twin advantages of No Water Hammer and Non Slam simultaneously. All features put together make the Dual Plate Check Valve one of the most efficient design. 

Main features of double disc check valve

Main features of metal seat dual plate check valves:

  • *Same valve can be installed horizontally or vertically.
  • *Only Check valve which can be installed for flow upside down due to spring assisted closure.
  • *Low pressure drop and reduced energy loss irrespective of pressure ratings.
  • *Efficient and positive sealing under most flow and pressure conditions. Valve close before flow reversal.
  • *Long time and trouble-free operation.
  • *Suitable for severe working conditions.

Technical specifications of double disc check valve

Technical specifications:

Design and manufacture API594
Nominal diameter 2"-48",DN50-DN1200
End connection Wafer,Lug,Flange
Pressure rating Class150-300-600-900-1500-2500,PN10-16-25-40-63-100-250-320
Body Carbon steel,Stainless steel,Duplex stainless steel,Alloy steel,Bronze
Disc Carbon steel,Stainless steel,Duplex stainless steel,Alloy steel,Bronze
Seat Metal to metal,Carbon steel,Stainless steel,Alloy steel,with hard faced
Spring Stainless steel,Inconel X750

Product Show: double disc check valve

Dual-Plate-Check-Valve
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Application of double disc check valve

This kind of   double disc check valve  is widely utilized in pipeline with liquid & other fluids. 

  • *General Industrial
  • *Oil and Gas
  • *Chemical/Petrochemical
  • *Power and Utilities
  • *Commercial Applications

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