Serco duckbill valve production materials mainly include neoprene, nitrile rubber, fluorine rubber. Flexible rubber structure, will not deform or freeze when opening and closing. Will not rust or corrode, free backflow device. Serco is a full rubber duckbill valve structure in shape "duckbill", with "forward into the duckbill valve price, reverse backstop" a new drainage valve product features. Known duckbill valve works, rubber corrosion under certain conditions. Good rubber with a unique formula created by the duckbill valve is soaked in water where there are decades of life. So that's why duckbill valve can replace the main reason to shoot the door duckbill valve, which is more widely used duckbill valve reasons. Flexible rubber check valve, so called because of shaped like a duckbill duckbill valve, this product has a flange connections and clamp connecting the two. Duckbill valve model, Serco supply material (certified), Anhui duckbill valve provided by Serco Gongyi City Water Supply Materials Co., Ltd. Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) is Zhengzhou, gate leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Serco leadership material in the water with the staff warmly welcome all inquiries negotiations to create Serco supply material a better future.