Chemical check valves are used to prevent the backflow of chemically treated water from irrigation systems to the source of water. It is installed to inject a chemical with the help of the injection pump that pumps it into the irrigation system. Silent, spring-loaded check valve is extremely efficient.
There is also a built-in vacuum valve to arrange air outflow and vacuum discharge when the flow stops, and also low pressure drainage to arrange water discharge at the inlet side of the check valve. Maximum pressure: 10 bar (1.0 MPa).