The suction and discharge valves on the hydraulic end of the pump are one of the essential components. Most of the reciprocating pump industrial valves are automatic valves. In order to ensure the timely opening and closing and accurate operation of the valve when the high viscosity liquid is delivered, the forced valve is used.

Typically, lift check valves are automatic valves that open under the pressure of fluid in one direction and act to prevent flow when the fluid flows in the opposite direction. The valve flap of the lift check valve is on the sealing surface of the valve seat, and its valve can be automatically raised and lowered.

Piston-type check valves are automatic valves that open under the pressure of fluid in one direction, and the valve flaps to prevent its flow when the fluid flows in the opposite direction.

The swing check valve function is to prevent the medium in the pipeline from flowing backward. The valve of the opening and closing part is opened or closed by the flow of the medium and the force to prevent the back flow of the medium from being called a check valve.