Lift check valve means to rely on the flow of the medium itself automatically open, close the valve, rely on the weight of the valve and fluid pressure in the automatic valves to prevent back flow of fluid medium, also known as the check valve, check valve, reflux valve, and the back pressure valve. The check valve is an automatic valve, its main role is to prevent the media back to prevent the discharge of the pump and drive motor reversal, as well as container media. The check valve can also be used to which the pressure may rise to the auxiliary system supplies more than the system pressure pipeline.
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