LF919
Lead Free* Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor, Sizes 1/2 to 2 IN
Series LF919 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/
Features
- Sensor on the relief valve for flood detection
- Lead Free* cast copper silicon alloy body construction, two poppet-style check valves, replaceable check seats, and an intermediate relief valve
- Maximum working pressure: 175 psi (12.06 bar)
- Separate access covers for the check valves and relief valve
- Bottom-mounted relief valve for reduced space requirements
- Top-mounted test cocks reduce installation clearances and make testing easier
- Innovative plastic seat guides and check valve plastic cover bushings for trouble-free guiding
- Flood alert feature activated with add-on connection kit, compatible with BMS and cellular communication
Literature
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- 919, LF919 - Repair Kits Parts Breakdown
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers (French)
- Flyer - Flood Detection for RPZ/RPDA Backflow Preventers with Flood Sensor
- Installation Instructions - 919, LF919
- Installation Instructions - BMS Flood Sensor Connection Kit
- Installation Instructions - BMS Flood Sensor Retrofit Connection Kit - LF919
- Installation Instructions - Cellular Flood Sensor Connection Kit
- Installation Instructions - Cellular Flood Sensor Retrofit Connection Kit - LF919
- Relief Valve Discharge Rates - 009, 909, 919, 957, 994
- Specification Sheet - LF919 (1/2 to 2 IN)
- Specification Sheet - LF919 (1/2 to 2 IN) (French)
- Specification Sheet - LF919 (1/2 to 2 IN) (Spanish)
- Specification Sheet - Watts Air Gaps, Elbows and Test Cocks
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 |