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Potter VSR-C3, Vane-Type Waterflow Switch for 3-inch Copper Pipe, with Retard, SPDT Contact(s)

Potter VSR-C3, Vane-Type Waterflow Switch for 3-inch Copper Pipe, with Retard, SPDT Contact(s)

Manufacturer:Potter Electric
Manufacturer Part#:1144452
Our Part#:VSR-C3
Stock Status: Ships in 3-5 Days
Retail Price:$275.00
Your Savings:$101.62(37%)
Your Price:$173.38


Potter Electric







Feature 5


Feature 7

Switch Type:Saddle-Type Flow Switch|Pipe Type:Copper|Nominal Pipe Size:3|Mounting Type:Saddle|Activation Type:Vane|Activation Delay (Retard):Yes|Contact Type:SPDT


  • UL and CSFM Listed
  • Service Pressure: 175 PSI (12.1 BAR) - UL
  • Flow Required for Alarm: 3.0 GPM (11.4 LPM)
  • Flow Sensitivity Range for Signal: 4-10 GPM (15-38 LPM) - UL
  • Maximum Surge: 18 FPS (5.5 m/s)
  • Contact Ratings:
    • Two sets of SPDT (Form C)
    • 10.0 Amps at 125/250VAC
    • 2.0 Amps at 30VDC Resistive
    • 10 mAmps min. at 24VDC
  • Conduit Entrances: Two knockouts provided for ½" conduit. Individual switch compartments suitable for dissimilar voltages
  • 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, 4.5°C/49°C
  • Non-corrosive sleeve factory installed in saddle


The Model VSR-C is a vane type waterflow switch for use on wet sprinkler systems. It is UL Listed for use on Type K, L, and M copper pipe, sizes 2" thru 4" (50mm - 100mm).

The VSR-C may also be used as a sectional waterflow detector on largesystems.

The VSR-C 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.

The VSR-C switches and retard device are 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

ModelNominal Pipe SizeNominal Pipe O.D.Hole SizeU-Bolt Nuts Torque
VSR-C22502.37560.31¼ + 1⁄8 - 1⁄1633.0 ± 2.010011.3
VSR-C33803.50088.92.00 + .062 ⁄ -.12550.8 ± 2.0
The Potter model VSR-C3 is a vane-type saddle flow switch with retard and SPDT contact(s), designed for use with 3-inch copper pipe.

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