Series RH81 Flanged Duckbill Valve

EEV Duckbill valves are non-return axial water flow valves made of layers fabric and rubber material reinforced. And widely used for large pipe diameter flows with low back pressures, such as sea coast, sand beach, sea port, city release water,etc.With Sample design and one piece rubber construction, EEV Duckbill valves provide a safe and dependable backflow prevention service. The valves have a low opening pressure and is self- draining which eliminates standing water and maximizes storage volume in the upstream pipe.

EEV Duckbill valve is manufactured of flexible rubber material reinforced with fabric material. Its geometry consists of a shot piece of duckbill-like rubber tube at one end, a round flange typically clamped onto a pipe port at the other, and a saddle shape at the middle.

1.  100% rubber construction.

2.  Won't corrode, warp or freeze open or shut   

3. 1'' opening pressure, low head loss.

4. Low cost both valves and installation.

5. Low maintenance costs

6. Cannot be propped open.

A. Tamper and vandal proof.

B. Children and animals cannot enter.

C. Backflow prevention assured.

7. Zero operating costs, Zero life-cycle costs.

8. Non-slamming, no noise, no vibration.

9. Absolute backflow prevention saves money.

A. Reduces flood liability.

B. Lowers re-treatment costs.

C. Helps to eliminate compliance violations.

D. Reduces beach erosion.

E. Keeps infrastructure form shutting down (Roads, Airports and Businesses).

F. Eliminates complaints from constituents.

10. Rubber construction and less environmental impact from rust and corrosion.

11. Prevents buildup of mussels.

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