LF909 Large
Lead Free* Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor - Large Diameter 2-1/2 - 10 IN Sizes
Series LF909 Large Lead Free* Reduced Pressure Zone assemblies feature a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. Connection kits are available for BMS and cellular communication.
This series prevents the reverse flow of contaminated water caused by backsiphonage or backpressure from entering the potable water supply. Ideal for protection at health hazard cross-connections or for containment at the service line entrance. Its compact modular design facilitates maintenance and assembly access. Check with local water authorities for installation requirements.
To learn more visit: https://www.watts.com/floodprotectionsystem
The coating on this backflow assembly uses ArmorTek®, a patented 3-part advanced epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion.
To learn more visit: https://www.watts.com/armortek
Features
- Sensor on the relief valve for flood detection
- Flood alert feature activated with add-on connection kit, compatible with BMS and cellular communication
- Cast iron body construction with patented 3-part ArmorTek® epoxy coating for advanced corrosion resistance
- Exclusive relief valve design provides maximum capacity during emergency conditions
- Industrial strength sensing hose on larger size models
- Can be used in a variety of installations, including containment at the service line entrance
- No special tools required for servicing
Literature
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- Brochure - Automated Flood Protection
- Brochure - Backflow Prevention and Flow Control Plumbing
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers with Flood Sensor
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers with Flood Sensor (French)
- Installation Instructions - 909 Large, LF909 Large, 909RPDA
- Installation Instructions - BMS Sensor Connection Kit - 909, LF909 Large, 909RPDA
- Installation Instructions - Cellular Sensor Connection Kit - 909, LF909 Large, 909RPDA
- Installation Instructions - Custom Flood Sensor Settings
- Installation Instructions - SentryPlus Alert Technology (June 2020 - Present)
- Price List - Backflow Prevention Repair Kits & Service Parts
- Relief Valve Discharge Rates - 009, 909, 919, 957, 994
- Specification Sheet - Flood Sensor Connection Kit - Watts
- Specification Sheet - Flood Sensor Connection Kit - Watts (French)
- Specification Sheet - Flood Sensor Connection Kit - Watts (Spanish)
- Specification Sheet - LF909 Large
- Specification Sheet - LF909 Large (French)
- Specification Sheet - LF909 Large (Spanish)
- Specification Sheet - NYC Backflow Specialty Items
- Specification Sheet - SentryPlus Alert Upgrade Kit
- Specification Sheet - Watts Air Gaps, Elbows and Test Cocks
- White Paper - ArmorTek Advanced Coating System
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |