Dual Plate Wafer Check

The Calvary W-Check dual plate wafer check valve design conforms to API594 and API6D. It is generally stronger, lighter, smaller, more efficient, and less expensive than conventional swing check valves. It has about 25% the face to face dimension and 15% to 20% the weight of a swing check valve and making them less expensive than a swing check valve. It is much easier to install between standard gaskets and line flanges.

Sizes:  2” thru 14”

Pressure Classes:  
150, 300, 600, 900

Operating Temperatures:    
-50F to +500F (-46C to +260C)

Features Include:

  • Easy to install and maintain
  • Manufactured to API 594 and tested to API 598
  • Smooth, spring-assisted closing reduces water hammer
  • All WCB and 316 SS valves conform to NACE MR-01-75
  • Rugged Inconel X-750 spring is standard in all steel and stainless steel valves
  • Innovative 316 SS seat, standard in all WCB metal-seated valves, combined with standard 316 SS plates provides a true all stainless steel seating area

Click here to download PDF for technical information.