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Wafer Type Non-Return Check Valves

Main Technical Data:

Nominal diameter: DN50~800mm

Pressure rating: PN 6/10

Connection type: wafer

Standard: DIN, ANSI, ISO, BS

Medium: water, oil, air and low-corrosion fluids


Product Detail

Product Tags

Application
▪ Wafer Type Non-Return Check Valves (the double flap check valve) is mainly composed of valve body, valve disc, valve stem, spring and other important parts and components. It adopts a thin and lightweight design. As the closing stroke between the discs is shortened and the spring action can accelerate the closing effect, it can reduce water hammer and water hammer sound.
▪ The valve is mainly used in water supply systems, high buildings and industrial areas. As the distance between the surfaces is shorter than that of general check valves, it is most convenient for the places with limited installation space.

▪ Test pressure:
Shell Test Pressure 1.5 x PN
Seat Test Pressure 1.1 x PN

Material Specifications

Part Material
Body Cast iron, Ductile iron
Disc Aluminum bronze
Stem Stainless steel
Spring Stainless steel
Seat Rubber
Other required materials can be negotiated.

Structure

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