The purpose of using a check valve is to prevent the reverse flow of the medium, and a check valve is generally installed at the outlet of the pump. In addition, a check valve should also be installed at the outlet of the compressor. In short, in order to prevent the reverse flow of the medium, a check valve should be installed on the equipment, device or pipeline.
The disc of the swing check valve rotates around the rotating shaft in the valve body. The axis of the rotating shaft must be on the same plane as the sealing surface of the valve body to ensure the sealing when closed.
Under the action of the fluid pressure flowing in one direction, the valve disc opens, when the fluid flows in the opposite direction, the fluid pressure and the self-coincidence of the valve disc act on the valve seat, thereby cutting off the flow. Among them, the swing check valve belongs to this