The Watts 88004077 LF009-QT-S-FS is a 1/2" lead-free reduced pressure zone (RPZ) backflow preventer designed to protect potable water systems from contamination caused by backpressure and backsiphonage. Constructed from durable copper-silicon alloy, this assembly includes a bronze strainer, quarter-turn ball valve shutoffs, and an integrated flood sensor with SentryPlus Alert technology.
The built-in flood sensor detects excessive discharge from the relief valve, helping identify potential flooding conditions. When connected to a compatible SentryPlus connection kit (sold separately), the sensor can provide remote notifications or integrate with building management systems.
Designed for continuous-pressure applications, the LF009 features two independent check valves, an internal relief valve, and a single access cover for easier in-line maintenance. Its compact construction helps reduce installation clearance requirements while providing access to replaceable check seats and internal components.
Product Features:
- Manufacturer: Watts
- Part Number: 88004077
- Model: LF009-QT-S-FS
- Series: LF009
- Size: 1/2"
- Product Type: Reduced Pressure Zone (RPZ) Backflow Preventer
- Body Material: Lead-Free Copper-Silicon Alloy
- Connections: 1/2" Female NPT
- Maximum Working Pressure: 175 PSI
- Operating Temperature: 33F to 180F
- Shutoff Valves: Quarter-Turn Ball Valves with Tee Handles
- Strainer: Included, Bronze
- Flood Detection: Integrated SentryPlus Alert Sensor
- Check Valves: Two Independent In-Line Check Valves
- Relief Valve: Internal
- Application: Potable Water Backflow Protection
