Potter VSR-FE2-4


Switch 4 Inch Flow w/Electronic Retard

Availability: Please Call for Lead Time

  • Factory New
Brand: Potter FireAlarm.com Part #: 72302 Categories: , , , Manufacturer Part #: VSR-FE2-4


The Model VSR-FE-2 is a vane type water-flow switch for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 thru 40, sizes 2″ thru 8″ (50mm – 200mm). The unit may also be used as a sectional water-flow detector on large systems. The unit contains an output relay and an adjustable electronic retard. The relay is actuated when a flow of 10 gallons per minute (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.





  • 0-90 second field replaceable electronic time delay retard
  • Easy to adjust electronic time delay
  • Two DPDT (form C) contacts
  • Weatherproof
  • Easy to read wire terminal designations
  • 5-year warranty


Vane Type Water-flow Switch W/ Electronic Retard; VSR-FE-2
Potter – Data Sheet