The Viking 1-1/2” Flow Control Valve is a quick opening, differential type flood valve with a spring loaded rolling diaphragm clapper. The Flow Control Valve can be used to facilitate manual or automatic on/off control. As an on/off control valve it may be used on Deluge Systems, Sprinkler Systems or to automatically fill tanks or reservoirs. The Viking Flow Control valve is an integral part of the Viking Firecycle® System.