This Colt™ 2 1/2 inch lead free reduced pressure detector backflow preventer assembly protects potable water systems from contamination due to backsiphonage and backpressure, while also monitoring for unauthorized water use from fire protection systems.

This compact, modular assembly is designed for **horizontal Z pattern installation** and features a durable **Type 304 (Schedule 40) stainless steel body** with a quick access sleeve. It is equipped with two independent **Link Check modules** for drip-tight closure, and **outside stem and yoke (OSY) resilient seated gate valves** for reliable shutoff.

Flood Detection & Monitoring

• A **flood sensor** with **SentryPlus Alert® technology** detects excessive water discharges from the relief valve, providing alerts for potential flooding events.
• A **metered bypass** with a **gallon per minute meter** detects underground leaks and unauthorized water use from the fire sprinkler system.
• The flood sensor requires an **add-on connection kit** for activation and communication with other devices. 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.

Key Features

• **Lead Free** construction for potable water systems.
• Extremely **compact design** that is 70% lighter than traditional designs.
• **Groove fittings** for integral pipeline adjustment.
• **Patented link check** for lowest pressure loss.
• Unmatched **ease of serviceability** with replaceable check disc rubber.
• Corrosive resistant **bottom-mounted pressure relief valve**.