Flanged rubber duckbill valve

Rubber Duckbill Valve

Automatic Backflow Prevention for Drainage Systems

Rubber duckbill valves are designed to provide reliable one-way flow control in drainage and sewage systems.

They automatically open and close based on pressure difference, effectively preventing backflow, flooding, and contamination.

Key Functions

✔ Backflow Prevention
Prevents sewage, floodwater, and seawater from flowing back into the system.

✔ Anti-Clogging Design
Full rubber structure ensures no blockage from debris like sand, plastic, or branches.

✔ Tight Sealing & Odor Control
Flexible sealing prevents leakage and blocks unpleasant odors.

✔ Efficient Discharge
Opens under low pressure and maintains strong discharge performance.

✔ Corrosion Resistance & Maintenance-Free
All-rubber construction ensures long service life without maintenance.

Applications

Widely used in:

• Municipal drainage      systems

• Sewage treatment plants

• Coastal and marine      outfalls

• Reservoirs and flood      control projects

• Industrial wastewater      systems

Why Choose Duckbill Valve Instead of Traditional Check Valve

✔ No mechanical parts → No failure risk
✔ No maintenance required
✔ Better performance in dirty water
✔ Longer service life

👉 Send your size and application to get a fast quotation.