The wafer check valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and belongs to an automatic valve. It is light in weight, small in size, and easy to install between flanges. The inside of the valve is composed of two semicircular springs and a plate surface. The spring is fixed on the valve body with a pin to close the valve plate and the fluid pressure opens the spring. The deformation is very fast, which can protect the pipeline from water hammer damage. When installing a check valve, pay special attention to the flow direction of the medium. The normal flow direction of the medium should be consistent with the direction of the arrow indicated on the valve body, otherwise the normal flow of the medium will be blocked. The bottom valve should be installed at the bottom of the pump suction line.
Wafer check valve
Precautions for installation of wafer check valve
1. When placing the pipeline, pay attention to make the passing direction of the wafer check valve consistent with the flow direction of the fluid;
2. Install in a vertically placed pipeline. For horizontally placed pipelines, place a wafer check valve vertically;
3. Use a telescopic tube between the wafer check valve and the butterfly valve. Never connect it directly with other valves;
4. Avoid adding pipe joints and obstructions within the operating radius of the valve plate;
5. Do not install a reducer in front or behind the wafer check valve;
6. When installing a wafer check valve near the elbow, pay attention to leaving enough space;
7. When a wafer check valve is installed at the outlet of the water pump, at least six times the diameter of the valve should flow out to ensure that the butterfly plate is affected by fluid.
Wafer check valve
The above are the precautions for the installation of the clamp check valve. The function of the clamp check valve is to only allow the medium to flow in one direction and prevent the flow in the opposite direction. Usually this kind of valve works automatically. Under the action of the fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincidence of the valve flap act on the valve seat, thereby cutting off the flow.