Viking offers a wide range of Waterflow Indicators, from 50mm to 200mm.
The Waterflow Indicator is a vane-type waterflow switch designed to detect a sustained flow of 10 gpm or more. It is intended for use on wet-pipe sprinkler systems only. The Model VSR has a built-in adjustable pneumatic retard device delays actuation of the electrical switches to reduce the possibility of false alarms caused by one or more transient flow surges.