BW End Dual Plate Check Valve

Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...

Product Details


Dual Plate Check Valves are designed to automatically prevent backflow in systems where it is desirable to permit flow in one direction and prevent flow in the opposite direction. When the pump starts and the downstream flow creates the required pressure drop in the forward direction, the Dual Plates will automatically open. When the pump stops and the flow ceases, the torsion of the spring will automatically close the Dual Plates prior to flow reversal. This creates a positive shutoff against flow reversal and eliminates system surges and water hammer.


1. Nominal Diameter:

     2" - 48"  (DN50 - DN1200)

2. Pressure Range:

    Class 150 - Class 2500  (PN16 - PN150)

3. Working Temperature:      

     -196℃ - +560℃

4. Body Material:
 Carbon Steel, Stainless Steel, Alloy Steel, Bronze

5. End Connection:


Manufacture Standard

Face to  Face

Flange   Drilling

Pressure-Temperature Class

Test   Standard

API594, API6D, JB/T8937

API594, API6D JB/T8937

JB/T74-90, GB/T13402, GB/T9112-9124,  ANSI B16.5, API604, ASME B   16.47

JB/T74, GB/T9124, ASME B16.34, DIN2401, SH3406


Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of bw end dual plate check valve in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.