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Brand - Watts
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Lead Free Cast Copper Silicon Alloy Body
Weight: 18.4 lb
Reduced Pressure Zone (RPZ) Assembly
NPT Inlet and Outlet Connections
Quarter-Turn Ball Valve Shutoffs
Flood Sensor with SentryPlus Alert® Technology
Modular Check Construction for Easy Maintenance
Max Operating Pressure: 175 PSI
Water Temperature Range: 33°F – 180°F
Description
The 1 1/2 inch WATTS Lead Free Reduced Pressure Zone Backflow Preventer Assembly (LF009M2-QT-FS) protects potable water supplies from pollution caused by backsiphonage or backpressure. Featuring a lead-free copper silicon alloy body and NPT connections, this assembly includes quarter-turn ball valve shutoffs and a SentryPlus Alert® flood sensor for detecting relief valve discharge. Its modular design allows for easy in-line maintenance and repair. Suitable for pressures up to 175 PSI and temperatures from 33°F to 180°F, ensuring reliable performance in critical applications. Item number 88004114.
Help Me Connect
Connections
This assembly is equipped with NPT inlet and outlet connections, designed for direct integration into piping systems using compatible male NPT threaded connections.
Flood Sensor Activation
The integrated flood sensor with SentryPlus Alert® technology requires an add-on connection kit for activation.
Connection kit options include BMS, cellular communication, or the Sensor Control Monitor, which enables integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
This 1 1/2 inch lead free copper silicon alloy reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering the potable water supply due to backsiphonage and/or backpressure, in accordance with national plumbing codes and water authority requirements.
Key Features
Features a lead free copper silicon alloy body construction for sizes 1/4 inch to 2 inch.
Includes a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve, helping to prevent potential flooding events.
Designed with a single access cover and modular check construction for simplified in-line maintenance and repair.
Equipped with NPT inlet and outlet connections and quarter-turn full port resilient seated ball valve shutoffs with lever handles.
Contains an internal relief valve for reduced installation clearances and replaceable seats for economical repair.
The flood sensor, when paired with an add-on connection kit, can relay alerts for potential flooding events via BMS, cellular communication, or integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
Specifications
Assembly Type: Reduced Pressure Zone (RPZ)
Nominal Size: 1 1/2 inch
Body Material: Lead Free Cast Copper Silicon Alloy
Connection Type: NPT (threaded)
Shutoff Valves: Quarter-Turn Full Port Resilient Seated Ball Valves
Internal Components: Two In-line Independent Check Valves, Captured Springs, Replaceable Check Seats, Internal Relief Valve
Disc Material: Silicone Rubber
Cover Bolts: Stainless Steel
Maximum Operating Pressure: 175 PSI (12.1 bar)
Water Temperature Range: 33°F – 180°F (0.5° – 82°C)
Certificates & Approvals
USC
ASSE Std. 1013
AWWA Std. C511
CSA B64.4
IAPMO File No. 1563
FAQs
What is the primary function of this backflow preventer?
This 1 1/2 inch Reduced Pressure Zone assembly is designed to protect potable water supplies by preventing polluted water from flowing back into the system due to backsiphonage or backpressure. It ensures compliance with national plumbing codes.
What types of connections does this assembly use?
The assembly features NPT (National Pipe Taper) inlet and outlet connections, allowing for secure threaded installation into your existing piping system.
Does this backflow preventer include a flood sensor?
Yes, this assembly comes with a flood sensor featuring SentryPlus Alert® technology, designed to detect excessive water discharge from the relief valve. An add-on connection kit is required to activate its alert capabilities.
What are the maximum operating pressure and temperature?
This backflow preventer is suitable for supply pressures up to 175 PSI (12.1 bar) and can handle water temperatures ranging from 33°F to 180°F (0.5° to 82°C).
What materials are used in its construction?
The body is constructed from lead-free cast copper silicon alloy, with silicone rubber discs for the check valves and relief valve. It also includes replaceable polymer check seats and stainless steel cover bolts.
