FLUID UL listed; model 250 Water Motor Gong used with Deluge Valve or Sprinkler Alarm Check Valve mounted outside the building or near the valve station. Hydraulically driven, lightweight, compact and noncorrosive Aluminum body is designed to operate at the low pressure of 15 PSI. Gong produces continuous piercing alarm at intensity of 90dB when the deluge spray or sprinkler system operates
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