Vane Type Water flow Alarm Switch with Retard VSR Series
Vane Type Water flow Alarm Switch with Retard VSR Series
UL, CUL and CSFM Listed, FM Approved, LPCB Approved, For
CE Marked (EN12259-5) / VdS Approved model use VSR-EU
Service Pressure: 450 PSI (31 BAR) – UL
Flow Sensitivity Range for Signal:
4-10 GPM (15-38 LPM) – UL
Maximum Surge: 18 FPS (5.5 m/s)
Contact Ratings: Two sets of SPDT (Form C)
10.0 Amps at 125/250VAC
2.0 Amps at 30VDC Resistive
10 mAmps min. at 24VDC
Conduit Entrances: Two knockouts provided for 1/2″ conduit.
Individual switch compartments suitable
for dissimilar voltages.
Environmental Specifications:
• NEMA 4/IP54 Rated Enclosure suitable for indoor or
outdoor use with factory installed gasket and die-cast housing
when used with appropriate conduit fitting.
• Temperature Range: 40°F – 120°F, (4.5°C – 49°C) – UL
• Non-corrosive sleeve factory installed in saddle.
Service Use:
Automatic Sprinkler NFPA-13
One or two family dwelling NFPA-13D
Residential occupancy up to four stories NFPA-13R
National Fire Alarm Code NFPA-72
Product description
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 through 40, sizes 2″ thru 8″ (50 mm thru 200 mm) and schedule 5, sizes 2″ thru 6″. LPC approved sizes are 2″ thru 8″ (50 mm thru 200 mm). See Ordering Information chart.
The VSR may also be used as a sectional waterflow detector on large systems. The VSR 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 GPM (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.
