Rubber-flap Check Valve

Sewage and rainwater pipes have debris and dirt. Metal seal check valves get stuck or rust. Our Rubber Flap Check Valve solves this. The disc is fully covered with rubber. The seal is soft and strong. It resists corrosion. The model H44X-16Q means check valve, flange, swing type, rubber seal, PN16, and ductile iron QT450. The inside of the body also has a rubber lining. The flow path is smooth with no dead corners. Unlike metal check valves, the rubber flap closes against the seat to form a soft seal. Even with small particles in the water, you get zero leak. The disc opens wide. So flow resistance is low.

Suhao has mature rubber molding for this valve. We use high-temperature compression molding. The rubber bonds tightly to the metal frame. There are no bubbles or layers. We made DN400 Rubber Flap Check Valves for a city wastewater plant. The sewage had fibers and particles. The valves ran for 3 years. The disc was still good. The seal was still tight. You can buy this with our rubber lined butterfly valves. This gives you a full set of soft seal valve solutions for water projects. We support full custom work. Do you need a special size Or a different rubber like oil-resistant NBR or high-temperature EPDM Or a position feedback device Just send a drawing or working conditions. Our engineers make a plan in 25 days.