Dry System Valves

Reliable dry system valves are designed to protect areas subject to temperatures below 40°F (4°C). Dry sprinkler systems have compressed nitrogen or air in the system piping, with water under pressure held below the clapper of the valve. When a fire occurs, and the sprinkler activates, nitrogen or air pressure is relieved from the system piping, causing the valve to open and water to flow into the system pipe and any opened sprinklers. 

Reliable offers both low and standard pressure dry valves in a variety of sizes, inlet and outlet connections, and pressure ratings. Low-pressure dry systems featuring the Reliable DDX-LP and EX valves can improve water transit times following the operation of the valve, and in some cases, eliminating the need for a quick opening device.