Water flow switch VSR-FEX

CHARACTERISTICS

Fluid
for water

DESCRIPTION

Description •Model : VSR (comes with Retard) •Manufacturer: Potter •Maximum Service Pressure: 450 PSI (31 BAR) •Flow Sensitivity Range for Signal: 4-10 GPM (15-38 LPM) •Contact Ratings: Two sets of SPDT (Form C) •NEMA 4/IP54 •Temperature Range: 40°F – 120°F, (4.5°C – 49°C) – UL •Non-corrosive sleeve factory installed in saddle •UL Listed and FM Approved Description •The Model VSR-FEX is a vane type water flow 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. General Information 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.