Check valve: Check valve also known as a valve or check valve, its role is to prevent the pipeline in the back of the medium. The bottom valve of water pump suction is also the check valve class. The headstock is opened or closed by the medium flow and force to prevent the backflow of the valve from being called check valve. Check valve belongs to the automatic valve class, mainly used in the medium one-way flow of the pipeline, only to allow the medium flow in a direction to prevent accidents.
Check valve According to the structure, can be divided into lift type check valve, swing check valve and butterfly check valve three kinds. Lift check valve can be divided into vertical and horizontal two types. The Swing check valve is divided into single, double and multiple three kinds. Butterfly Check Valve for straight-through, the above several check valve in connection form can be divided into threaded connection, flange connection and welding three kinds.Check Valve
The installation of the vacuum check valve should pay attention to the following things: 1, in the pipeline do not allow the check valve to bear the weight, large check valve: should be independent support, so that it is not affected by the pressure exerted by the pipe system. 2, installation attention to the direction of the flow of the medium should be consistent with the direction of the valve body marked arrows. 3, lift vertical flap check valve: should be installed on the vertical pipe.
Check valve installation should pay attention to the following: 1, in the pipeline do not allow the check valve to bear the weight, large check valve should be independent support, so that it is not affected by the pressure caused by the pipe system. 2, installation attention to the direction of the flow of the media should be the same as the valve body ticket arrow direction. 3, Lift vertical valve Check valves should be installed on the vertical pipe. 4, the lift type horizontal valve check valve should install on the horizontal pipeline.Check Valve
Check valve classification: According to material classification: (check valve main material) 1. Cast iron Check Valves-2. Brass Check Valves-3. Stainless steel Check valve.Check Valve