Wet System Valves

Wet fire protection systems employ a variety of valves to control, monitor, and test system performance. Alarm check valves are one-way valves that permit water to flow into the sprinkler piping while preventing backflow; they also activate water motor gongs or pressure switches to signal system operation. Riser manifolds may typically combine a water flow switch , pressure gauges, flow test and drain valve, into a compact assembly. Floor control assemblies, common in high-rise buildings, provide localized isolation and monitoring on each floor, typically consisting of a control valve, check valve, pressure gauges, and a test-and-drain valve. Test and drain valves simulate sprinkler activation by allowing controlled water discharge for system testing and maintenance. Trim valves are small, auxiliary valves and connections installed around system devices, enabling draining, venting, testing, or priming. Collectively, these valves ensure safe operation, reliable detection, and proper maintenance of wet sprinkler systems.