LF909-FS Large
Lead Free* Reduced Pressure Valve Assembly Backflow Preventers with Flood Sensor - Large Diameter 2-1/2 - 10 Inch Sizes
Series LF909-FS Large reduced pressure valve assembly backflow preventer is designed to prevent the reverse flow of liquids in a plumbing system due to backpressure or backsiphonage where there is a potential health hazard. An exclusive relief valve design provides substantially improved relief valve discharge performance during emergency conditions of combined backsiphonage and backpressure. These large diameter backflow preventers are available in 2-1/2 to 10 inch sizes.
This series features an integrated 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.
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/floodprotectionsystem
Features
- Integrated sensor on relief valve for flood detection
- Flood alert feature available with add-on connection kit, compatible with BMS and cellular communication
- Coated with advanced ArmorTek coating technology for 6x less surface rusting
- Health hazard protection level
- 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 - Backflow Prevention and Flow Control for Waterworks
- Brochure - Backflow Prevention and Flow Control Plumbing
- Flyer - RPZ/RPDA Backflow Preventers with Flood Sensor
- Installation Instructions - 909 Large, LF909-FS Large, 909RPDA-FS
- Installation Instructions - 909 Large, LF909-FS Large, 909RPDA-FS (French)
- Installation Instructions - BMS Flood Sensor Connection Kits - 909, LF909-FS Large, 909RPDA-FS
- Installation Instructions - Cellular Flood Sensor Connection Kits - 909, LF909-FS Large, 909RPDA-FS
- Installation Instructions - Custom Flood Sensor Settings
- Specification Sheet - LF909-FS Large
- Specification Sheet - LF909-FS Large (French)
- Specification Sheet - LF909-FS Large (Spanish)
- Specification Sheet - Watts Air Gaps, Elbows and Test Cocks
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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 |