Working principle of wafer check valve

It mainly relies on the flow of the medium itself in the pipeline to generate power, thereby automatically opening and closing the valve. Specifically:

Opening process
When the medium flows forward, the fluid pressure pushes the valve disc up. For the wafer butterfly check valve, because its butterfly plate is two semicircles and uses spring forced reset, when the fluid flows, due to the eccentric design, the valve disc has a small turning radius and can be opened quickly. In the final stage of the valve disc opening, the weight (or other power-assisting mechanism) will deviate from the center line to help the valve disc reach the fully open position, thereby reducing the pressure loss when the fluid flows forward.

Closing process
When the flow direction of the medium is reversed, the valve disc closes quickly under the action of the spring or its own weight, effectively preventing the medium from flowing back. For the wafer check valve, the greater the pressure of the backflow medium, the tighter the valve disc of the valve closes, and the better the sealing effect. This design completely eliminates the possibility of medium backflow, thereby protecting the safety of the pipeline system.

Working characteristics
Compact structure: The wafer check valve has the characteristics of short structure length, small size and light weight, which is easy to install and maintain.
Sensitive action: The valve disc has a short stroke, small closing impact force, and sensitive and reliable action.
Good sealing performance: soft sealing or hard sealing materials are used to ensure that the valve has good sealing performance when closed.
Widely applicable: It can be used for horizontal or vertical pipelines, easy to install, and widely used in industry, environmental protection, water treatment, high-rise building water supply and drainage pipelines and other fields.
In summary, the wafer check valve plays an important role in preventing medium backflow and protecting equipment safety in the pipeline system through its unique working principle and design characteristics.