This Colt 3 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water from being pumped or siphoned into the potable water supply due to backsiphonage or backpressure.

The compact, modular design features a 304 stainless steel body with a quick access sleeve and is approved for horizontal N pattern installation. It includes torsion spring check valves, grooved gear operated butterfly valves with tamper switches, test cocks, a corrosive-resistant bottom-mounted pressure relief valve, and a gallon per minute (GPM) meter to detect underground leaks and unauthorized water use.

The assembly incorporates a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. When paired with an optional add-on connection kit, the sensor activates to relay alerts for potential flooding events, with integration options including BMS, cellular communication, RS-485 Modbus, or the Nexa® platform via Wi-Fi.

WARNING: It is illegal to use this product in a plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing, consult your local water authority, building, and plumbing codes.

Features

• Extremely compact design, 70% lighter than traditional designs
• 304 (Schedule 40) stainless steel housing and sleeve for durability
• Groove fittings for integral pipeline adjustment and easy installation
• Patented link check for lowest pressure loss
• Unmatched ease of serviceability with replaceable check disc rubber
• Bottom-mounted cast stainless steel relief valve
• Metered bypass (GPM meter) to detect leakage or theft of water from the fire sprinkler system
• SentryPlus Alert® flood sensor on the relief valve for flood detection
• Flood alert feature activated by an add-on sensor connection kit
• Integrated supervisory switch on each gate valve