VSR-F-EX-3.5 Potter 3.5 Inch Explosion Proof Flow Switch

VSR-F-EX-3.5 Potter 3.5 Inch Explosion Proof Flow Switch

 
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SKUWECVSR-F-EX-3.5
Product #39938
 


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Potter
  • The 3.5" (88.9mm) device requires a hole with a diameter of 2" ± 1/8" (50mm ±2mm).

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.

  • II 2 G Ex d II B T6
  • II 2 D Ex tD A21 IP 66 T85C
  • Service Pressure - Up to 450 PSI (31 BAR )
  • Minimum Flow Rate for Alarm - 10 GPM (38 Lpm)
  • Maximum Surge - 18 FPS (10 m/s)
  • Contact Ratings:
    • Two sets of SPDT (Form C)
    • 15.0 Amps at 125/250 VAVAC
    • 2.0 Amps at 30 VD C Resistive
  • Conduit Entrances:
    • Two conduit entrances provided for ½" conduit with ½" NPT threaded connections
  • Environmental Specifications - For use in hazardous locations, Classified as:
    • Class I: Groups C, D, Div. 1
    • Class II: Groups E, F, G, Div. 1
    • Class III: Div. 1
  • Suitable for indoor or outdoor use with factory installed gasket and cast aluminum housing
  • NEMA 4 Rated Enclosure - use with appropriate conduit fitting
  • Temperature: 40°F/120°F, 4,5°C/49°C
  • Non-corrosive sleeve factory installed in saddle

VSR-F-EX-3.5 Specifications PDF

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