UUKL Listing for smoke control applications!
Among several great enhancements to this industryleading line, V6 firmware unlocks support for smoke control features.
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. It is UL and CUL Listed for use on steel pipe; schedules 10 through 40.
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.