This Colt™ 6 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage or backpressure.

It is ideal for protection at cross-connections identified as health hazards, such as on fire sprinkler systems and at service line entrances.

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 & Features

• Features an extremely compact design with a 304 (Schedule 40) stainless steel housing and sleeve.
• Includes outside stem and yoke (OS&Y) resilient seated gate valves and drip-tight shutoff valves.
• Groove couplings allow for easy installation and pipe alignment.
• Equipped with patented Link Checks for lowest pressure loss and reversible elastomer discs.
• A bottom-mounted cast stainless steel relief valve ensures reliable protection.
• A metered bypass with a cubic feet per minute meter detects leakage or unauthorized water use.
• Designed for unmatched ease of serviceability with replaceable check disc rubber.

Flood Detection & Monitoring

• Integrates a flood sensor with SentryPlus Alert® technology to detect continuous discharge 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 connectivity.
• The OS&Y model includes an option for an integrated supervisory switch on each gate valve.