Duckbill Check Valve

Definition

A style of check valve that changes its opening area based on internal pressure.

Purpose

Duckbill check valves allow fluid to flow in one direction while preventing backflow. The flexible valve design ensures a tight seal under low pressure and can handle varying flow rates without compromising performance.

Examples of Use

1. Sewage Systems: Prevents backflow in sewage and wastewater systems.
2. Stormwater Management: Installed in stormwater outfalls to prevent backflow from flooding.
3. Industrial Applications: Used in pipelines and process systems to maintain unidirectional flow.

Related Terms

• Check Valve: A valve that allows flow in one direction and prevents reverse flow.
• Ball Valve: A valve that uses a spherical disc to control the flow of fluid.
• Gate Valve: A valve that opens by lifting a barrier out of the path of the fluid.

Notes

• Duckbill check valves are low maintenance and have no moving parts, reducing the risk of mechanical failure.
• They are suitable for use in harsh environments due to their robust and flexible design.