“MRV” Series Valves “MRV” Series Features The “MRV” series is available in sizes between ¼” and 4”. The 2 port design allows them to be used both as pressure relief and back pressure valves. Valves are factory set at 50 psi and are easy to adjust in the field to other settings. An optional port enables the use of a standard pressure gauge so the operator can see the results of field adjustments. • High reliability/low cost • Injection molded bodies (plastic materials) • Corrosion protection on all hardware • Externally adjustable from 0 to 150 psi • Wide range of materials • Diaphragm material options • Mounting options including: