Duckbill valve | cement tube duckbill valve | Serco supply material (certified merchants) are provided by Serco Gongyi City Water Supply Materials Limited. 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! When you install a check valve, the flow direction of the medium should pay particular attention should be normal flow direction of the medium on the valve body indicates the direction of the arrow coincides with rubber duckbill valve price, otherwise it will truncate the normal flow of the medium. Bottom valve should be installed at the bottom of the pump suction piping. When the valve is closed, will produce water hammer pressure in the pipeline, can cause serious damage to the valves, piping or equipment rubber type duckbill valve, especially for large mouth lines or high-pressure line, it should cause the check valve chosen by the high degree of attention. Advantages of low cost duckbill valve duckbill valve, such as the use of suitable rubber material life than metal valve, easy to install duckbill valve manufacturer, flexible installation, can be repaired. (1) maintain high jet velocity. (2) to prevent intrusion of seawater and sediment is one of the main properties of the duckbill valve. (3) in favor of the discharge pipe flushing. (4) Under certain conditions, the availability of the higher dilution. (5) no corrosion.