A sprinkler control valve with a tamper switch connects to a standpipe alongside a check valve and waterflow switch leading to sprinklers. A sprinkler test and drain connection drops down to a two-inch drain riser. A two-and-a-half-inch hose valve mounts to the standpipe at three feet to five feet above the finished floor at the stair landing.
SPRINKLER CONTROL VALVE W/TAMPER SWITCH CHECK VALVE WATERFLOW SWITCH SPRINKLER TEST AND DRAIN CONNECTION 2" DRAIN RISER STANDPIPE 2 1/2" HOSE VALVE 3' 0" TO 5' 0" AFF TO SPRINKLERS STAIR LANDING
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