Check valves also known as one-way valve or check valve, whose role is to prevent the line of medium back. Pump water off the end of the valve also belongs to check class. Opening and closing pieces by medium flow and forces to open or closed to prevent the media back check valve called. Check valves are automatic valves, mainly used for one-way flow of media channels, only allowing media to flow in one direction, in order to prevent accidents. Typically, the check valve installation, fluid so that the valve opening of the valve under pressure, and flow from the inlet side of the outlet side. When the inlet side of the pressure lower than the export side, the valve automatically shut down the channel under the action of gravity of the fluid pressure in and of itself, prevent fluid backflow. Press the valve movement in different ways, mainly divided valve lift, swing and butterfly three categories. Lift check valve and shut-off valve body more similar, check proxy, its fluid resistance is large. Such small-diameter high pressure valve, often using spherical valve. Swing check valve for fluid resistance is small, generally applies to small and medium-caliber, low-pressure large-diameter pipe, often providing a plurality of the valve on the valve channel separator, check valve principle, become Orange Peel. Butterfly valve similar to the shape of the butterfly. It is simple, small fluid resistance. Check valves closed too quickly, may cause the pipeline was hit in the liquid to generate noise, check valves, and even cause damage to the valve parts. To avoid this, a buffer can be used if desired check valve function to extend the closing time. Check valves in the pump action water supply system is to prevent the impact of high pressure water pump impeller reflux. System in operation due to some reason, the pump suddenly stopped, pump pressure disappears, high pressure water pump connected to the outlet and will reverse back into the pump. When equipped with a pump outlet valve, it will shut down immediately to prevent reverse flow back into the high-pressure water pump. Check valve action is to prevent the hot water system in the hot water back into the pipeline. If the PVC pipe is likely to scorch the pipe, and may even hurt, especially in the solar water heater system. Valve | Dingrui air conditioning | Check proxy provided by wucheng Dingrui Air Conditioning Equipment Co., Ltd. Valve | Dingrui air conditioning | Check proxy is wucheng Dingrui Air Conditioning Equipment Co., Ltd. (www.wcdrkt.com) (www.wcdrkt.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel This page or image on to obtain the latest information, contact: Qiu East only.