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Due to Component and Supply Shortages World Wide Due to Component and Supply Shortages World Wide
Potter VS-SP Vane Type Waterflow Alarm Switch - Small Pipe
Potter VS-SP Vane Type Waterflow Alarm Switch - Small Pipe

Potter VS-SP Vane Type Waterflow Alarm Switch - Small Pipe

Manufacturer:Potter Electric
Manufacturer Part#:1111100
Our Part#:1111100
Stock Status: Call for Availability
Retail Price:$190.50
Your Savings:$43.96(23%)
Your Price:$146.54


Potter Electric







Feature 5


Feature 7

Switch Type:Threaded Flow Switch|Pipe Type:Plastic,Copper,Iron|Nominal Pipe Size:1,1-1/4,1-1/2,2|Mounting Type:Threaded|Activation Type:Vane|Activation Delay (Retard):No|Contact Type:SPDT


  • UL and ULC Listed, FM Approved
  • Service Pressure: Up to 450 PSI (31 BAR)
  • Minimum Flow for Alarm: 10 GPM (38 LPM)
  • Maximum Surge: 18 FPS (5.5 m/s)
  • Power Requirements
    • STANDBY: 10ma at 120V AC or 1.5ma at 24V AC/DC
    • ALARM: 40ma at 120V AC or 35ma at 24V AC/DC
  • Contact Ratings: DPDT (Form C) 2 Amps at 30VDC or 125VAC resistive
  • Conduit Entrances: Two knockouts provided for ½" conduit
  • Suitable for indoor or outdoor use with factory installed gasket and die-cast housing.
  • NEMA 4 Rated Enclosure - use with appropriate conduit fitting
  • Temperature range: 40°F / 120°F, 4,5°C/49°C
  • Non-corrosive sleeve factory installed in saddle
  • Sizes Available: Schedules 10 thru 40, sizes 2" thru 8" (50mm thru 200mm)
  • Caution: This device is not intended for applications in explosive environments.


The Model VSR-FE-2 is a vane type waterflow 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 waterflow 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.

The unit is enclosed in a general purpose, die-cast housing. The cover is held in place with two tamper resistant screws which require a special key for removal. A field installable cover tamper switch is available as an option which may be used to indicate unauthorized removal of the cover.

Compatible Pipe/Installation Requirements

ModelPipe SizeHole Size
VSR-FE22501¼ + 1/8 - 1/1633 ± 2

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