Pressure Seal Swing Check Valve
Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 (ASME B16.34)
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AWWA Check Valve
High Performance • Durable
WWA check valve for automatic backflow prevention in municipal water pipelines and pumping stations.
Technical Specifications
Key Features & Applications
When a water pump stops or pressure changes within a distribution network, flow can reverse and place additional stress on pumps and connected pipelines. An AWWA Check Valve helps prevent this reverse movement by allowing water to flow in one direction and closing automatically when flow decreases or reverses.
In a swing-type arrangement, a hinged disc moves away from the seat under forward-flow pressure. As the flow slows, the disc returns towards the seat under gravity and reverse differential pressure. The valve operates without an external power supply or manual intervention.
African Valve is an AWWA Check Valve Suppliers in Egypt, serving municipal waterworks, pumping stations and industrial water projects in Nigeria, Egypt and South Africa.
Technical Specifications
Parameter | Specification |
|---|---|
Valve Type | AWWA Check Valve |
Design | Swing Check / Single Disc |
Size Range | DN50–DN600 |
Pressure Rating | Class 125 / Class 250 |
Body Material | Cast Iron ASTM A126 Class B, Ductile Iron ASTM A536 |
Seat Material | Bronze Metal Seat / EPDM Resilient Seat |
Disc Configuration | Hinged Swing Disc |
End Connection | Flanged |
Operation | Automatic / Flow Actuated |
Flow Direction | Unidirectional |
Closure Arrangement | Free Swing / Lever and Weight / Lever and Spring |
Design Standard | AWWA C508 |
Flange Standard | ASME B16.1 / ASME B16.42 |
Testing Standard | AWWA C508 |
Installation | Horizontal or Approved Vertical Upward Flow |
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