The R-K DRV series low pressure diaphragm relief valve is designed for low pressure applications with no back pressure to release excess up-stream pressure on the piping, storage tank and/or system due to pressure surges, vaporizing, or heat reaction. Adjustable screw and lock-nut makes it easy to accurately pre-set relief pressure. Teflon (primary and EPDM (back-up) diapragms. This pressure relief valve is designed to keep the stainless steel spring totally isolated from the fluid chamber insuring no metal contact with the fluid. Working pressure range from 5 to 25 PSI Top entry and parallel inlet and outlet ports to facilitate installation and avoid piping problems. Ideal for DI waterm harsh chemicals, and other high purity applications.
