What does a check valve do?

1. The function of the check valve: to prevent the medium from flowing backwards, to prevent the pump and the driving motor from reversing, and to discharge the medium in the container. \x0d\2。 Check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent the medium from flowing backwards, also known as check valve, one-way valve, reverse flow valve and back pressure valve. Check valves are automatic valves. \x0d\ x0d \ 3。 Check valves can be divided into three types according to their structures: lifting check valves, swing check valves and butterfly check valves. \ x0d \ Lift check valves can be divided into vertical and horizontal types. \x0d\ Swing check valves are divided into three types: single disc, double disc and multi-disc. \x0d\ Butterfly valve is a straight-through check valve. The connection forms of check valves above \x0d\ can be divided into four types: threaded connection, flange connection, welded connection and clamp connection. \ x0d \ x0d \ 4。 The installation of check valve should pay attention to the following matters \ x0d \ a. Do not let the check valve bear the weight in the pipeline, and the large check valve should be supported independently to avoid being affected by the pressure generated by the pipeline system. \x0d\B During installation, pay attention to that the flow direction of medium should be consistent with the direction of the arrow marked on the valve body. \x0d\C, lifting vertical flap check valve should be installed on the vertical pipe. \x0d\D, the lifting horizontal flap check valve shall be installed on the horizontal pipeline.