Designed to attach seamlessly to the end of a flanged pipe, our flap valves allow water to flow out while preventing backflow and debris, such as sticks and leaves, from entering the system.

Flap gate valves allow outflow of water from pipes or structures while preventing backflow. Our Series 6000 and 6200 models are designed for systems with seating heads of ten feet or less, while the …

Flap Valves are used for end closure of outfall lines, or in manholes, to prevent entrance of backwater. They swing open under direct pressure to release the outfall fluid and close when direct pressure is …

PF-25 flap valves are free-opening, tight-closing valves available at a modest price. Designed for use with concrete pipe, head walls, and corrugated metal pipe with up to ten foot seating head.

WaFlap Flap valves are designed for quick, straightforward installation directly onto pipe outlets, delivering instant protection against backflow and flooding.

Jul 17, 2025 · What is a Flap Valve? A flap valve is a type of check valve that consists of a hinged flap that opens or closes to allow or restrict the flow of liquid or gas. The design typically allows …

Flap gates are commonly used in water flow, sewage and wastewater systems. They are designed to allow fluids to flow in one direction while preventing back flow in the opposite direction. Flap gates …

For use at the outlet of a drainage system as a backflow preventer and in flood protection. When the water level rises, backflow is prevented by automatic closing of the cover. Different cover variants …

Flap Valves, also known as Flap Gates, are installed on the end of a flanged pipe to allow water to flow out while preventing detritus such as sticks, leaves, and other debris from pouring back in.

Jun 29, 2025 · A flap valve is a type of non-return valve, often installed at the end of a pipe. Its main job is to let water or sewage flow out but automatically slam shut to prevent anything from flowing back …