A three-quarter-inch breathing air main branches down to a three-quarter-inch ball valve and support as required. A pressure sensor is interlinked to an alarm with a corresponding alarm and strobe at the breathing air station. The drop terminates thirty-six inches above the finished floor with a six-inch blowdown leg and cap alongside half-inch quick disconnect fittings.
36" BREATHING AIR MAIN 3/4" 3/4" BALL VALVE SUPPORT AS REQUIRED FINISHED FLOOR PRESSURE SENSOR INTERLOCKED TO ALARM ALARM/STROBE AT BA STATION TO INDICATE BREATHING AIR ALARM 6" BLOWDOWN LEG AND CAP 1/2" QUICK DISCONNECT
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