This 3 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage and backpressure.

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

Construction & Design

• Features a short lay length, lightweight stainless steel body for reduced installation and shipping costs.
• Equipped with resilient seated shutoff valves with non-rising stem (NRS).
• The cam-check assembly provides maximum flow at low pressure drop.
• Utilizes a stainless steel relief valve with a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs.
• Compact modular design facilitates easy maintenance with a single access cover for in-line repairs.
• Internal metal parts are 300 Series stainless steel for corrosion resistance.
• Check assembly is made of Noryl®.

Flood Sensor Technology

• Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
• When paired with an add-on connection kit, the sensor activates to relay alerts for potential flooding events.
• Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
• An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component that has no communication with any other device.