• 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 Utilizes advanced ArmorTek coating technology to resist corrosion of internals Replaceable stainless steel seats Furnished with a cubic feet per minute meter Health hazard application Maximum flow at low pressure drop Detects underground leaks and unauthorized water use Compact for economy combined with performance

This 4 inch reduced pressure detector backflow preventer assembly prevents the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. This assembly consists of an epoxy coated cast iron body, OSY resilient seated gate valves, captured spring check valves, replaceable stainless steel seats, top mounted test cocks, a pressure differential relief valve,and comes furnished with a CFM meter to detect underground leaks and unauthorized water use. The coating on this backflow assembly uses ArmorTek(R), a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion. This backflow assembly contains a 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 relays a signal that triggers notification of potential flooding to service personnel. The add-on sensor connection kit is available for building management systems and cellular communication.