Wafer check valve refers to a valve that automatically opens and closes the valve disc through the flow of the medium itself to prevent the medium from flowing backward. The function of the wafer-type butterfly check valve is to allow the medium to flow in only one direction and prevent reverse flow.

Application range:

Wafer-type butterflycheck valve is used in pure pipelines and industrial, environmental protection, water treatment, and high-rise building water supply and drainage pipelines to prevent the medium from flowing in reverse.

Structural features:

In the open state of the swing check valve, fluid pressure is almost unimpeded, so the pressure drop across the valve is relatively small. The disc of the lift check valve rests on the sealing surface of the valve seat in the valve body. Except for the disc being able to lift freely, the rest of this valve is similar to a globe valve. Fluid pressure lifts the disc from the valve seat sealing surface, and medium backflow causes the disc to fall back onto the valve seat, cutting off the flow. Depending on the usage conditions, the disc can be an all-metal structure or have a rubber pad or rubber ring embedded in the disc holder. Like a globe valve, the passage through a lift check valve is narrow, so the pressure drop across a lift check valve is greater than that of a swing check valve, and the flow rate of a swing check valve is less restricted.

1. Small size, light weight, compact structure, easy maintenance

2. The valve plate adopts a dual design and can quickly close under the elastic force of the spring

3. Due to the quick-closing action, it can prevent medium backflow

4. The valve body has a short structural length and good rigidity

5. Safe and convenient, can be installed in both horizontal and vertical directions