This 8 inch reduced pressure detector backflow preventer assembly helps stop the reverse flow of liquids due to backpressure or backsiphonage, preventing potential health hazards. It is extremely compact and lighter than traditional designs, approved for horizontal N pattern installation.

This assembly features a durable stainless steel body with a quick access sleeve, torsion spring check valves, and resilient seated gate valves with outside stem and yoke (OSY). It also includes test cocks, a corrosive-resistant bottom mounted cast stainless steel pressure relief valve, and a gallon per minute (GPM) meter to detect underground leaks and unauthorized water use.

Flood Detection & Alerts

• Equipped with a flood sensor featuring SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
• When paired with an add-on connection kit (sold separately), the sensor activates to relay alerts for potential flooding events.
• Connection kit options include BMS, cellular communication, and the Sensor Control Monitor, enabling integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Key Features

• Extremely compact design, significantly lighter than traditional designs.
• Housing and sleeve constructed from 304 (Schedule 40) stainless steel.
• Groove fittings allow integral pipeline adjustment.
• Patented torsion spring check provides lowest pressure loss.
• Unmatched ease of serviceability with replaceable check disc rubber.
• Bottom mounted cast stainless steel relief valve.
• Metered bypass to detect leakage or theft of water from the fire sprinkler system.

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