Check valve function

The check valve is a valve that automatically opens and closes the valve clack depending on the flow of the medium itself to prevent the medium from flowing back. The main functions of the check valve are: to prevent the medium from flowing backward, to prevent the pump and the drive motor from reversing, and to discharge the container medium.
The check valve has only one flow direction, that is, it can only flow in the direction of the water inlet, preventing water from flowing in the opposite direction. The flowing medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the weight of the disc and its flow resistance, the valve is opened. On the contrary, the valve is closed when the medium flows back.