APPLICATION STATEMENTS Installed in the bypass line the valve discharges to atmosphere. Valve opens on power failure, low pressure signal or as a high pressure relief valve.

Operates automatically off line pressure. Heavy-duty, nylon-reinforced diaphragm. Rectangular-shaped, soft seat seal provides drip-tight Class VI closure. Diaphragm assembly Guided top and bottom. Throttling seat retainer for flow and pressure stability. Easily maintained without removal from the line. Replaceable seat ring. Alignment pins assure proper reassembly after maintenance. Valves are factory tested. Valves are serial numbered and registered to facilitate replacement parts and factory support.