Duckbill Backflow Preventer

Our Duckbill Backflow Preventer Type XH81a is made for small drainage, chemical waste, pool circulation, and building pipes. We use it in small sizes and tight spaces. We have been doing this for over 20 years. This duckbill backflow preventer type xh81a goes in fast, is light weight, and stops backflow. It is a good choice for civil and small industrial pipes. We use EPDM or silicone rubber for the body. These materials resist aging and weather. We add fiber reinforcement for tear resistance, fatigue resistance, and long life. The valve mouth is a gradual duckbill shape. It opens and closes fast and seals tightly. The clamp is stainless steel. It tightens 360 degrees and does not loosen.

This thing works from -20℃ to 150℃. It handles pressures from PN6 to PN10. Each duckbill backflow preventer type xh81a goes through air tightness and pressure tests. It opens and closes by itself using media pressure. No power or manual control needed. Forward flow resistance is very low. Backward seal is tight with no leaks. The clamp design needs no welding, no flange, and goes in and out fast. This cuts your work time and cost. The small size and light weight fit tight spaces like vertical pipes, horizontal pipes, and equipment outlets. It does not catch debris or clog. No upkeep for a long time. It works for clean water, waste water, mild corrosive media, and普通 chemical fluids. Our factory is 10,000 square meters with 50 workers. We check every unit before shipping. We give a 24-month warranty.

Every pipe system has different clamp types. So you can change this duckbill backflow preventer type xh81a to your needs. Tell us your material and clamp type. Minimum order is 10 pieces. We give free samples. Custom samples take about 15 to 20 days. We take USD, EUR, GBP, and RMB. We offer a 24-month warranty.

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