A check valve is a mechanical valve that only permits water flow in one direction.
检查阀(单向阀)是一个手动阀门，这样水只能往一个方向走。
Export pump with check valve, it will immediately turn off to prevent reverse flow back high-pressure water pump.
水泵出口装有逆止阀时，它会立即关闭，防止高压水反向流回水泵。
Premature wear and noisy operation or vibration of the moving parts can be avoided by selecting the size of check valve on the basis of flow conditions.
为了避免出现运动部件的过早磨损、噪音或振动运行，就要根据流体状态选择止回阀的通径。
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