General
The Model VSR-FEX is a vane type waterflow switch for use on wet sprinkler systems located in hazardous locations. 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.
Features:
- NEMA 4/IP66 solid metal enclosure
- 0-90 second field replaceable retard
- Non-corrosive saddle bushing
- (2) ½” threaded conduit connections
- Assembled in USA
Specifications
- Make : Potter
- Model: VSR-FEX (2”)
- Size: 2”
- Enclosure: Cover: Cast Aluminum Base: Cast Aluminum 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
- environmental Limitations
-
- 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 and cast aluminum housing
- NEMA 4/IP66 Rated Enclosure - use with appropriate conduit fitting • Temperature: 40°F/120°F (+4.5°C ≤ Ta ≤ +49°C)
- Non-corrosive sleeve factory installed in saddle
- Conduit Entrances: 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.
- Service Use: NFPA 13, 72
- Maximum System Pressure: 450 PSI (31 BAR)
