This Colt(TM) 3 inch reduced pressure detector backflow preventer assembly prevents the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage and/or backpressure.

This compact modular design is approved for horizontal Z pattern installation, offering a lightweight solution that is 70% lighter than traditional designs.

A 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 standard material product, consult your local water authority, building and plumbing codes.

Construction & Design

• Features a 304 (Schedule 40) stainless steel housing and sleeve with a quick access design.
• Includes two independent Link Check modules with a patented link check for lowest pressure loss.
• Equipped with grooved gear operated butterfly valves with a tamper switch for reliable shutoff.
• Contains a corrosive resistant bottom-mounted cast stainless steel pressure relief valve.
• Bronze body, nickel plated test cocks for accurate system checks.

Advanced Monitoring & Features

• Integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve.
• When paired with an add-on sensor connection kit, the flood sensor is activated to relay alerts for potential flooding events.
• Connection kit options include BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
• A gallon per minute meter (metered bypass) detects underground leaks and unauthorized water use from the fire sprinkler system.
• Groove couplings allow for easy installation and pipeline adjustment.
• Replaceable check disc rubber ensures unmatched ease of serviceability.