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FS1 1/4-NPT - FloodStop System for Water Heaters

FS1 1/4-NPT - FloodStop System for Water Heaters
Manufacturer:  OnSite PRO, Inc.  SKU:  FS1-1-4-NPT
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Price:  $143.95

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Water Heaters have a limited life, then leaks after corrosion. Because Water Heaters are continually under pressure, even smallpressurized leaks can quickly flood and devastate a home. FloodStop FS 3/4-C kit automatically shut off the water supply to the Water Heater and sounds an alarm, leaving all other household fixtures and appliances operational. Powered by AC Adaptor or Batteries. Output contacts are available, which allow the Controller to connect with Alarm, Home Automation or Auto-Dialer Systems if desired.


  • The FloodStop valve is installed between the Water Heater and its manual shutoff valve
  • Water/leak sensor is placed at the base of the Water Heater
  • Valves stay open until water loss is detected
  • Water on sensor closes Floodstop valves and sounds alarm
  • Valves stays closed until problem is attended to and system reset
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Motorized Full-Port Ball Valve (1 1/4 inch NPT pipe threaded)
Control Unit (with Battery Backup 4 x C Size)
Water/Leak Sensor
AC Power Adaptor
Output Contact Wires (2)

Installation Manual
Downloads: 266
Size: 1389 KB