Dual Check Valve

A double check valve is a type of check valve that has two independent check valves installed in series. It is used to prevent backflow from two different sources. The double check valve is designed to prevent the backflow of contaminated water into a potable water supply. It is commonly used in water supply systems to protect against backflow from irrigation systems, fire sprinkler systems, and other sources of contaminated water. The double check valve is also used in industrial applications to prevent backflow from chemical processes.