Rubber Duckbill Check Valves are a very reliable and cost effective check valve compared to flap check valves and other conventional check valves.
Rubber Check Valves require minimal maintenance; the simple one-piece design and reinforced rubber construction eliminate the mechanical and metal components that rust and seize in conventional flap-gates and check valves.
Duckbill Check Valves are a passive - reactive device requiring no external mechanisms or power source to operate. The flexible rubber sleeve is normally closed but will react and open with as little as 1 inch of head pressure and always providing maximum flow with minimal pressure drop across the valve. This ease of operation reduces standing water in sewer pipes where mosquitoes and other pests can thrive.
The all flexible construction will pass large objects without blockage yet offers exceptional back flow prevention and can even seal around trapped solids with as little as 1 psi of back pressure.
Rubber Duckbill Check Valves are manufactured with high quality materials including an outer layer specially formulated to repel growth of marine organisms.
Typical applications include:
- Storm water outfall (to prevent backflow flooding)
- Flood control systems
- Pumping stations/wet wells
- Sewer interceptor check valve
- CSO / SSO / Effluent discharge
- Submerged outfall diffuser nozzles
- Coarse bubble air diffusers
They are available in flanged, slip on (over the outside diameter of the pipe) and insertable models from DN50 to DN1200.