This Colt™ 4 inch lead free reduced pressure detector backflow preventer assembly (RPDA) safeguards potable water systems from contamination due to backsiphonage and backpressure.

It is ideal for health-hazard cross-connections, such as those found on fire sprinkler systems and at service line entrances.

Design & Construction

• Features an extremely compact design, making it significantly lighter than traditional backflow preventers.
• The entire valve body and closure sleeve are manufactured from Type 304 (Schedule 40) stainless steel for durability and corrosion resistance.
• Includes torsion spring check valves, test cocks, and a corrosive resistant bottom-mounted pressure relief valve.
• Equipped with outside stem and yoke (OSY) resilient seated gate valves.
• Drip tight shutoff valves prevent leakage.
• Patented link check ensures lowest pressure loss and offers unmatched ease of serviceability with replaceable check disc rubber.
• Comes furnished with a gallon per minute meter to detect underground leaks and unauthorized water use from the fire sprinkler system.

Flood Detection & Alerts

• Features a flood sensor with SentryPlus Alert® technology on the relief valve to detect excessive water discharges.
• When paired with an add-on sensor connection kit (sold separately), the sensor activates to relay alerts for potential flooding events via BMS, cellular communication, or the Sensor Control Monitor (integrating with BAS via RS-485 Modbus or Nexa® platform through Wi-Fi).
• The OS&Y model includes an option for an integrated supervisory switch on each gate valve.

Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide proper drainage in the event of a discharge. Watts® is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation.