Potter VSR-S


Waterflow Alarm Switch for Small Pipe

Availability: In Stock

  • Factory New
Brand: Potter FireAlarm.com Part #: 80965 Categories: , , , Manufacturer Part #: VSR-S


The Model VSR-S is a vane type waterflow switch for use on wet sprinkler systems that use 1″ (25mm), 1¼” (32mm), 1½” (38mm) or 2″ (50mm) pipe size. The unit may also be used as a sectional waterflow detector on large systems. The unit contains two single pole double throw snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a fl ow 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.


Weight 1 lbs
Dimensions 5.56 × 3.50 × 4.89 in

Potter Electric Signal Company, LLC





Unit of Measurement

EA (Each)

Production Status



  • Assembled in USA
  • 0-90 second field replaceable time delay retard
  • Easy to read retard time delay adjustment knob
  • Fits 1” to 2” CPVC, copper, brass, or iron pipe
  • Comes with all necessary paddles
  • Two SPDT (form C) contacts
  • Weatherproof
  • Easy to read wire terminal designations
  • 5 year warranty

VSR-S; Vane Type Waterflow Alarm Switch With Retard

Potter - Data Sheet