Installed in pipelines to prevent medium back flow that may cause reverse rotation of pumps and motors, or to block medium back flow into containers.

Automatic Operation: Opens and closes via the medium's own pressure, functioning as a self-actuated valve.

Optimized Performance: When fully open, it delivers excellent flow characteristics, low fluid resistance, and minimal pressure (head) loss.

Rubber Flap Design: The rubber disc is mold-formed for high interchangeability and easy replacement.

Applications: Suitable for industries including water supply and drainage, heating, wastewater treatment, gas, power generation, metallurgy, petroleum, chemicals, textiles, mining, and municipal fire protection.

Main Overall Dimensions Unit：mm