Boasting a ductile iron body and an elastic rubber flap core, this automatic check valve operates without any external drives. It leverages forward medium thrust to open the rubber flap for smooth circulation, and relies on reverse medium pressure paired with the flap's elastic reset force to deliver leak-proof sealing. The valve's standout design merges the exceptional structural strength of ductile iron with the unrivaled flexible sealing advantages of rubber flaps, ensuring optimal performance in diverse low-pressure applications.

Standard Packaging: Standard export wooden case packaging is utilized to ensure the integrity of the valves during international transit, providing protection against moisture and physical impact.

This valve finds extensive application across diverse sectors including urban water supply and drainage networks, sewage treatment facilities, fire protection systems, HVAC installations, water treatment plants and farmland irrigation systems. It is recognized as a standard anti-backflow solution for civil construction and municipal engineering.