LF860 Large
Lead Free* MasterSeries In-Line Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor - Large Diameter
LF860 Large
Lead Free* MasterSeries In-Line Reduced Pressure Zone Assembly Backflow Preventers with Flood Sensor - Large Diameter
Features
- Sensor on the relief valve for flood detection
- Flood alert feature activated with add-on connection kit, compatible with BMS and cellular communication
- ArmorTek coating technology to resist corrosion of internals
- Combines the use of a stainless-steel relief valve seat and stainless-steel check components for maximum performance and durability
- Requires no special tools for inline service
- Is highly suitable for potable drinking water systems where code mandates protection from backpressure and backsiphonage conditions
- Protects potable water against cross-connection contamination of high hazard (toxic) fluids in water services
- Sizes 2 1/2 to 10 Inch
- Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity
MasterSeries LF860 Large Lead Free* reduced pressure zone assemblies feature a flood sensor using SentryPlus Alert® technology to detect continuous discharge from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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 valve’s internals are protected by ArmorTek®, a multilayer corrosion‑resistant coating engineered to extend service life in demanding environments.
To learn more visit: https://www.watts.com/armortek
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. Some certification agencies allow you to search by product name and brand.
Literature
Video - Connected Backflow Flood Detection
Learn how Watts flood sensors integrated with backflow prevention assemblies provide real-time alerts for excessive relief valve discharge, helping prevent water damage and facility downtime.
Runtime : 00:01:10Watch Now
Video - ArmorTek Advanced Coating System Overview
Armortek’s patented triple-layer coating protects valves from corrosion and microbiologically induced damage, extending their lifespan and enabling repair and recycling for sustainable water management.
Runtime : 00:01:13Watch Now
Video - ArmorTek in Las Vegas Five Years After Install
See how Armortek’s advanced coating system has successfully protected valves from corrosion and microbiological damage over five years in a real-world Las Vegas installation.
Runtime : 00:01:44Watch Now
Video - How to Activate Your Flood Detection System
Learn how to quickly register, activate, and test your SentryPlus Flood Sensor Upgrade Kit using the Syncta platform for seamless automated flood protection and customizable alerts.
Runtime : 00:02:18Watch Now
Select a Model
Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF860 Large