This 2 1/2 inch lead free MasterSeries LF860 reduced pressure zone backflow preventer assembly is designed to protect potable water systems against backpressure and backsiphonage from high hazard (toxic) fluids in industrial and other applications.

It features an epoxy coated ductile iron body, domestic outside stem and yoke (OSY) resilient seated gate valves, test cocks, spring-loaded check valves, and a pressure differential relief valve.

Advanced Corrosion Protection

• The ductile iron body and internal components are coated with ArmorTek®, a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates.
• Stainless steel relief valve seat and stainless steel check components provide maximum performance and durability.

Flood Detection and Alerting

• Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
• When paired with an add-on connection kit (sold separately), the sensor is activated to relay alerts for potential flooding events via multichannel alerts (call, email, text).
• Connection kit options allow integration with Building Management Systems (BMS), cellular communication, or a Sensor Control Monitor for BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Design and Maintenance

• Lead free construction complies with low lead installation requirements.
• Inline serviceable assembly requires no special tools for maintenance.
• Features a captured modular spring assembly, reversible and replaceable discs, field replaceable seats, and captured O-ring design.
• Equipped with domestic outside stem and yoke (OSY) gate valves.