Flange Rubber Disc Soft Seal Swing Check Valve

Boasting a ductile iron body and an elastic rubber flap core, this automatic check valve 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.

1. Flexible seal, excellent leak proof performance

The valve disc is made of elastic rubber material and is in surface contact with the valve seat for sealing. It can automatically compensate for minor wear and deformation of the sealing surface and achieve a tight fit even under low pressure conditions, effectively avoiding medium leakage. Compared to metal hard sealed check valves, they have stronger adaptability to medium pressure fluctuations, especially suitable for pipeline systems with non particle or small particle media such as clean water and sewage.

2. Simple structure, low failure rate

Without vulnerable moving parts such as hinges, springs, and shafts, traditional check valves avoid the problem of opening and closing failure caused by component rust, jamming, and fatigue fracture at the root. The rubber valve disc is wear-resistant, anti-aging, and has a long service life, greatly reducing the maintenance frequency and replacement cost of the valve.

3. Easy installation and strong adaptability

The valve body is mostly made of ductile iron material, which is lightweight and has high strength. The flange connection method can be directly connected to the pipeline without complex calibration; Supports various installation methods such as horizontal and vertical (bottom-up), suitable for diverse scenarios such as urban water supply and drainage, sewage treatment plants, high-rise buildings, and agricultural irrigation.

Standard export wooden case packaging

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 demonstrates superior suitability for low-pressure, high-flow pipeline systems where the conveyed medium contains trace amounts of impurities, and is recognized as a standard anti-backflow solution for civil construction and municipal engineering applications.