This Colt Series C500 6 inch Reduced Pressure Detector Assembly is engineered to safeguard potable water supplies from dangerous cross-connections, such as those found in fire sprinkler systems and industrial processing, by preventing the reverse flow of non-potable substances due to backsiphonage or backpressure.

This assembly provides continuous monitoring for unauthorized water use in fire protection systems and features an an integrated flood sensor for enhanced safety.

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.

Key Features

• Compact Design: Exceptionally compact and up to 70% lighter than traditional designs.
• Robust Construction: Housing and sleeve constructed from 304 (Schedule 40) stainless steel for durability.
• Grooved Fittings: Facilitates integral pipeline adjustment and easy installation.
• Advanced Check Valves: Features patented link checks for lowest pressure loss and unmatched ease of serviceability with reversible elastomer discs.
• Pressure Relief Valve: Bottom-mounted cast stainless steel relief valve.
• Integrated Flood Sensor: Detects excessive water discharges from the relief valve and can trigger alerts when paired with an add-on connection kit.
• Metered Bypass: Includes a gallon per minute meter to detect leakage or unauthorized water usage in the fire sprinkler system.
• OS&Y Shutoff Valves: Equipped with Outside Stem and Yoke resilient seated gate valves that are UL Classified and FM Approved.
• Integrated Supervisory Switch: OS&Y model includes an option for an integrated supervisory switch on each gate valve, UL Certified for Safety Signaling.

Flood Sensor Activation

• The flood sensor provides a passive component for detecting water discharge from the relief valve.
• To activate flood alert features, an add-on sensor connection kit is required for communication and real-time alerts. Kit options include BMS, cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa platform by Wi-Fi.