Professional equipment to suppress "water hammer"，SME industry check valve
Generally, when the inner wall of the pipeline is smooth and the water flow is free to move, if the opened valve is suddenly closed, it will cause the instantaneous impact pressure of the water flow on the valve under the action of inertia, commonly known as the "water hammer phenomenon". This is also the true face of the strange noise at night in the residential area. When the valve is closed, the pressure generated by the pipeline is too high, which can easily cause the water pipe to burst, which is called "positive water hammer"; on the contrary, the pressure generated when the valve is opened is too low, which will cause the pipeline to collapse, which is called "negative water hammer." The common point is that they will all have a strong destructive effect on the pipeline, and the valves and fixtures themselves will not be spared. Another form of water hammer is called "steam water hammer",