VSR-SFG Obsolete Product

Waterflow Alarm Switch with Glue-in Union


The Model VSR-SFG is a vane type waterflow switch for use on wet sprinkler systems using CPVC plastic fi ttings manufactured by Central Sprinkler Corp., Grinnell Sprinkler Corp., Spears Manufacturing Co., and IPEX (Scepter) that use 1", 1-1/4", 1-1/2" or 2" pipe sizes. It is equipped with a union to accommodate installation in confi ned spaces.

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 8-10 gallons per minute (30-38 liters per minute) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.



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