Sprinkler zones always require a water flow detector (typically a flow-switch) and an isolation valve (typically a monitored butterfly valve) and these two items are normally installed next to next to each other. To further save on labour and installation time, Zonecheck V combines our approved flow-switch testing device, Zonecheck, with an approved monitored butterfly valve. These two items come pre-assembled and pre-wired meaning that the sprinkler contractor can install, commission and demonstrate the correct function of both the flow-switch and the isolation valve more quickly.