The main purpose of the Dual Plate Wafer Check Valve is to perform the work of almost any conventional valve. However, being smaller makes it lighter and, therefore, is more cost efficient to purchase, install and maintain. It is also a silent check valve; because of it's innovative design, it does not slam upon closing.
The Dual Plate Wafer Check Valve plate design and flat seat offer many advantages. The flat seat eliminates any possibility of board snaps in the seat, which snaps occur frequently in other valves. When suspended in a vertical pin, the two plates have a reduced weight which eliminates excessive wear on the plate lugs. This wear can cause the plate to collapse on the seat's open surface, causing the valve to subsequently fail.
An important feature of the Dual Plate Wafer Check Valve is that it does not depend on the pressure or flow to center the plates in relation to the sealing surface in order to make the seal.
Single plate conventional designs, even those having centering guides, require a backpressure and backflow to center the plate to the seat in order to get a non leakage adjustment. This feature becomes extremely risky in the event of reduced flow and the handling of gases at low pressure.
End Connection: RF,RTJ, BW
Pressure range: Class150~2500(PN16~PN420)
Body material: Carbon steel, Stainless steel, Alloy steel, Bronze
Design in accordance with API 594
End to end dimension as per API 594
Flange dimensions in accordance with ASME B16.5, ASME B16.47
Inspection and Test according to API 598
NACE MR-0175 Service
Availability LUG design
Availability Double Flange from 12"
Single Spring for 2" to 6"
Double Spring for 8" and up
Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of wafer dual plate check valve retainerless design in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.