This Watts Series 009 Reduced Pressure Zone Assembly Backflow Preventer helps prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and/or backpressure, in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs.

This assembly is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and for contaminants at the service line entrance.

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing, consult your local water authority, building, and plumbing codes.

Key Features

• Bronze body construction for durability.
• NPT inlet and outlet connections for straightforward installation.
• Quarter turn full port resilient seated ball valve shutoffs with tee handles.
• Includes a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve.
• Single access cover and modular check construction for ease of maintenance and in-line repairs.
• Top entry to all internals for immediate accessibility.
• Captured springs for safe maintenance.
• Internal relief valve for reduced installation clearances.
• Replaceable check seats for economical repair.
• Large body passages provide low pressure drop.
• Compact, space-saving design requires no special tools for servicing.

Flood Sensor Details

• Flood sensor detects excessive water discharges from the relief valve.
• When paired with an add-on connection kit (sold separately), the 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.