Duckbill valve check | Serco supply materials | duckbill valve provided by Serco Gongyi City Water Supply Materials Co., Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) is a professional "PTFE lined rubber joints, standard waterproof casing, duckbill valve, power connector, stainless steel rubber joints" of the company. Since its inception, we adhere to the "honesty, sound management" approach, the courage to healthy competition in the market, so that "Serco supply material" brand has a good reputation. We adhere to the "service first, customers first" principle, so that the water supply materials Serco has won the trust of customers at the gate of the congregation, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! This series is a suite-type duckbill valve duckbill valve series plus aeration top accessory combination. Sewage treatment process, when the oxidation ditch filled with air valve open, no closed duckbill valve to prevent backflow check valve, attempts to prevent corrosion duckbill valve installation, long life, the installation is simple. Aeration-type check valve maintenance required specifications less flexible, small diameter, while a larger amount, it is suitable for mass production. Serco Gongyi City Water Supply Materials Central Plains region of the earliest duckbill valve manufacturer, the company uses advanced production techniques to coax valve continuous reform and innovation, making substitution Red Valve, selling home and abroad. Duckbill valve for sewage systems, drainage systems, dams emissions, airport / highway drainage, sewage tank discharge, odor barrier has a significant effect. With full rubber structure, never rust or corrode. Not deformed or in the open and closed state freeze, eliminating back. Nor will there be due to accumulation of trash and hanging open, provide tight seal.