What are the components for wafer check valve?

Wafer check valve is mainly composed of valve body, valve cover(bonnet), valve disc, valve stem, gasket, sealing ring,etc. 

Wafer check valve is one kind of check valve, which is an automatic valve, and the wafer check valves are often applied in the water supply and drainage pipeline systems. This wafer type check valve can open and close the valve door correspondingly according to the changes of the fluid medium in the pipeline system, so as to avoid the phenomenon of reverse flow in the pipeline. The check valve is also called one way valve, non return valve, cut off valve, and back pressure valve. 

Wafer check valve has single door wafer check valve and dual door wafer check valve. 

Wafer butterfly type check valves are widely used in pharmaceutical, food, petroleum, chemical, paper-making, metallurgy, electronics and other industries, and the wafer check valves are suitable for water, oils, gas, steam, and other mediums.