About silent check valve

HC42X/DRVZ silent check valve is mainly composed of main parts such as valve body, valve seat, flow guide, valve disc, bearing and spring. The internal flow channel adopts streamlined design with minimal pressure loss. The opening and closing stroke of the valve disc is very short, and it can be closed quickly when the pump is stopped, preventing huge water hammer sounds, and has the characteristics of silent closing. This valve is mainly used in water supply and drainage, fire protection, and HVAC systems. It can be installed at the outlet of the water pump to prevent backflow and water hammer from damaging the pump.

Check valve is also called one-way check valve. One-way check valve relies on the flow of the medium itself to automatically open and close the valve disc. It is used to prevent the medium from flowing back. It is also called check valve, one-way valve, reverse flow valve, and back pressure valve.

The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and drive motor, and the release of the container medium. The function of this type of valve is to only allow the medium to flow in one direction and prevent flow in one direction. Usually this kind of valve works automatically. Under the pressure of fluid flowing in one direction, the valve disc opens. When the fluid flows in the opposite direction, the fluid pressure and the self-weight of the valve disc act on the valve seat, thereby cutting off the flow.