A six-inch combination wet standpipe connects to a four-inch zone control valve and riser assembly located in Stair Number 2. A two-and-a-half-inch hose valve equips a one-and-a-half-inch adapter and cap with a chain.
3 4 STAIR #2 303 6" COMBINATION WET STANDPIPE 4" ZONE CONTROL VALVE AND RISER ASSEMBLY 2.5" HOSE VALVE WITH 1.5" ADAPTER AND CAP WITH CHAIN.
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