POTTER 1″ Waterflow Alarm Switch with Retard

SKU: 4684


The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (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.

2 in stock

  • NEMA 4/IP54 Rated Enclosure suitable for indoor or outdoor use with factory installed gasket and die-cast housing when used with appropriate conduit fitting
  • Temperature Range: 40°F – 120°F
  • Non-corrosive sleeve factory installed in saddle
Weight 1.5 lbs



Specification VSR Series


Specification VSR Series
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