6 Heat Detectors Rate Of Rise And Fixed 135 F Brand New In Boxes $40 For 6

US $210

  • Monsey, New York, United States
  • Nov 11th
6 HEAT DETECTORS 135 F  BRAND NEW IN BOXES These  Heat Detectors are attractive, durable and features combination rate-of-rise and fixed temperature operation. Heat detectors are 135°F temperature rating. Rate-of-rise detects heat by quickly responding to a rapid temperature increase. Rate-of-rise units have a wide spacing allowance of 50-foot centers.  Fixed temperature reacts to heat by responding to a specific temperature setting. These Detectors use the same reliable pneumatic rate-of rise element of former models, but offer added aesthetic appeal. The pneumatic rate-of-rise element responds to a rapid rise in temperature, approximately 15°F. (8°C) per minute, by expansion of air within the sealed chamber faster than it can escape through a calibrated vent. The resultant increase in pressure depresses the diaphragm, causing the electrical contact to close the circuit.  

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