The wet pipe sprinkler control assembly connects to a combined standpipe or fire main and branches out to feed the wet sprinkler system. The main feed line includes a flow switch, a pressure gauge, a supervised control valve, and a check valve with a bypass arrangement. A separate test and drain line with a pressure relief valve connects back to the drain riser.
TEST AND DRAIN WITH PRESSURE RELIEF VALVE TO WET SPRINKLER SYSTEM FLOW SWITCH PRESSURE GAUGE SUPERVISED CONTROL VALVE CHECK VALVE DRAIN RISER COMBINED STANDPIPE OR FIRE MAIN
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