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.

The R-K AOV series air valve features a compact thermoplastic valve available in six models to handle a multitude of piping system functions. This patented valve is designed so there is no metal contact with the fluid, and can be operated in any position Air actuated at 40 to 80 PSI. Direct acting full flow with top entry for easy maintenance and minimum water hammer. Suitable for most harsh chemicals, pollution control, wet processing stations, plating equipment, chemical processing and water treatment applications.

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