Sensus safety relief valves offer an economical installation for large capacity relief applications. The Model 250-S and 250-DW valves incorporate a deep molded diaphragm and offer an angled body with a large exit area for a high flow rate.

The Model 257-S features a “roll-out” diaphragm with a double ported single valve in which diaphragm action is constantly matched with spring action. This design offers large capacity, tight seat and reseat, sturdy construction, no adjustments, and easy servicing.