Potter VSR-F-EX-4, Vane-Type Waterflow Switch for 4-inch Steel Pipe, with Retard, SPDT Contact(s)

Features

• cUL, UL, CSFM and NYMEA Listed and FM Approved
• 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 VAC
  • 2.0 Amps at 30 VDC Resistive
• Conduit Entrance: Two conduit entrances provided for ½" conduit with ½" NPT threaded connections. Use an ATEX certified plug of protection "d", "tb", and IP66 for all unused conduit openings.
• For use in hazardous locations, Classified as:
  • 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
• Suitable for indoor or outdoor use with factory installed gasket andcast aluminum 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

Description

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.

The unit is enclosed in a cast aluminum housing. The cover is held in place with six M6 x 1mm-6g; 30mm long socket head cap screws with a 5mm hexagonal drive head and a property class of 8.8. These screws can only be replaced with identical ones.

Compatible Pipe/Installation Requirements