Heavy-Duty Rubber Duckbill Check Valves & Diaphragm Valves
Our Industrial Duckbill Check Valves offer a reliable and cost-effective solution for backflow prevention in wastewater, drainage, and slurry systems. Unlike mechanical swing check valves, the rubber duckbill valve features a flexible, “sleeve” design that opens with forward pressure and collapses to seal under back-pressure—ensuring zero leakage even with solids present.
Technical Specifications
Types: Slip-on, Flanged, and Threaded Inline duckbill valves.
Materials: Premium Silicone, EPDM, Neoprene, and Buna-N (Nitrile).
Sizes: Available from small silicone duckbill valves (medical/food grade) to large-scale industrial sizes (up to DN2400).
Pressure Rating: Low cracking pressure (as low as 1 psi).
Why Choose Duckbill Valves?
No Clogging: Ideal for media containing rags, grit, and solids.
Corrosion Resistant: 100% rubber/silicone construction—no metal parts to rust.
Silent Operation: Eliminates “water hammer” and slamming noises.
Versatile: Often used as an alternative to a diaphragm control valve or a swing check valve in harsh environments.
Applications
Municipal Sewage: Preventing ocean/river backflow into storm drains.
Pumping Stations: Protecting pumps from reverse flow.
Medical & Lab Equipment: High-precision silicone duckbill valves for fluid metering and one-way suction.
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