Rubber Duckbill Check Valve Flanged or Clamped

Product Details

Duckbill check valve is consist of elastic neoprene rubber and man-made fiber,made by special processing,the shape is similar to the duckbill, so called duckbill valve. Under the condition of no pressure inside, the duck mouth is closed under the action of elastic force,with the increase of internal pressure, the exit of duckbill gradually increases,and the liquid can be discharged at high flow rate.

Rubber duckbill valve can prevent flood and water intrusion into the sewers and streets of the basement, to avoid significant losses, prevent the water level rising, flooding into the sewage treatment plant, drainage pumping station, prevent sewage or the smell of fluid diffusion, and be ready for drainage.

The valve replaces knock door, check valve, completely solve knock door easy to be silt, silt, stone, vent.

Key Features

Easy Installation
One-Way Flow Protection
Corrosion & Chemical Resistance
Excellent Anti-Clogging Performance

How a Duckbill Check Valve Works

1. When forward pressure is applied, the elastic lips of the duckbill open, allowing media to pass through.
2. When flow stops or reverse pressure occurs, the duckbill lips automatically return to their closed position.
3. The valve seals tightly using its own elasticity, preventing backflow, odor escape, and external intrusion.
4. The valve operates entirely by differential pressure, requiring no external power or manual operation.

Specification

Dimensions