• Features an integrated flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve Alert features available with add-on sensor connection kit Entire valve body and closure sleeve is manufactured from 304 (schedule 40) stainless steel Approved for horizontal Z pattern installation Furnished with a gallon per minute meter Bronze body nickel plated test cocks Bottom mounted stainless steel relief valve Groove couplings allow for easy installation and pipe alignment UL and FM grooved gear operated butterfly valves with tamper switch

This Colt(TM) 4 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. It is ideal for protection at cross-connections identified as health hazards such as on fire sprinkler systems and from other contaminants found at the service line entrance. This compact modular design is approved for horizontal Z pattern installation. It consists of a stainless steel body with a quick access sleeve, torsion spring check valves, grooved gear operated butterfly valves with tamper switch, test cocks, and a corrosive resistant bottom mounted pressure relief valve. It comes furnished with a gallon per minute meter to detect underground leaks and unauthorized water use. This backflow assembly contains an integrated flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When activated through an add-on sensor connection kit, the flood sensor can send an alert to notify personnel about potential flooding. Add-on sensor connection kits are available for BMS and cellular communications.