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1113204 Potter VSR-F-EX-4 4 Inch Explosion Proof Flow Switch

SKU: 1113204
  • Model Number: VSR-F-EX-4
  • Item Number: 1113204
  • Suitable for indoor or outdoor use with factory installed gasket and cast aluminum housing
  • NEMA 4 Rated Enclosure - use with appropriate conduit fitting
  • Temperature: 40F/120F, 4,5C/49C
  • Non-corrosive sleeve factory installed in saddle
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Ordering Notes: Dealers Only
MSRP Price: $2,729.50

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1113204 Potter VSR-F-EX-4 4 Inch Explosion Proof Flow Switch
1113204 Potter VSR-F-EX-4 4 Inch Explosion Proof Flow Switch
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Product Details

The Model VSR-FEX is a vane type waterflow switch for use on wet sprinkler systems located in hazardous locations as shown above. 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 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.


  • Environmental Limitations For Hazardous Locations
    • Class I: Div. 1 & Div. 2, Groups C, D
    • Class II: Div. 1 & Div. 2, Groups E, F, G
    • Class III: Div. 1 & Div. 2
  • Maximum System Pressure - Up to 450 PSI (31 BAR )
  • Minimum Flow Rate for Alarm - 10 GPM (38 Lpm)
  • Maximum Surge - 18 FPS (10 m/s)
  • Switch Contacts - Two sets of SPDT (Form C), 15.0 Amps at 125/250 VAC, 2.0 Amps at 30 VDC Resistive
  • Conduit Entrances - Two conduit entrances provided for " conduit with " NPT threaded connections
  • Enclosure - Cover: Cast Aluminum, Base: Cast Aluminum

1113204 Specifications PDF

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