H44W

The swing check valve has a disc-shaped disc that rotates around the shaft of the valve seat channel. Due to the 

streamlined shape of the internal channel of the valve, its flow resistance is smaller than that of the lift check valve.

 It is suitable for low-flow rate and large-diameter applications where the flow does not change frequently, but it is 

not suitable for pulsating flow. Its sealing performance is inferior to that of the lift type.

Lift check valve, equipped with a spring, is used to ensure that the valve disc is always in a dynamic balanced

 state under the action of the spring. Regardless of the medium pressure at the valve inlet end, the valve can

 maintain balanced operation.