Making materials Serco duckbill valve includes neoprene duckbill valve, nitrile rubber, fluorine rubber. Flexible rubber structure, will not deform or freeze when opening and closing. Will not rust or corrode duckbill valve Which is cheaper, non-backflow device. Serco is a full rubber duckbill valve structure in shape "duckbill", with "forward into the duckbill valve specifications, reverse backstop" a new drainage valve product features. It is well known in the rubber under certain conditions corrosion. 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, 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. How much money duckbill valve | Fujian duckbill valve | Serco supply materials provided by Serco Gongyi City Water Supply Materials Co., Ltd. Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) strong, credible, in Zhengzhou, Henan Province of valve industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Serco water into the brilliant material and you work for a better future!