3 LF860-DOSY-FS

Item Number: F683099
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$11,720.01
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Assembly Type: Reduced Pressure Zone (RPZ)
  • Weight: 320.0 lb
  • Size: 3 inch
  • Lead Free Construction: Less than 0.25% lead by weight
  • Coating: ArmorTek® advanced epoxy for MIC and corrosion resistance
  • Flood Sensor: SentryPlus Alert® for leak detection (requires connection kit)
  • Shutoff Valves: Domestic OSY resilient seated gate valves
  • Max. Working Pressure: 175 psi
  • Certifications: ASSE 1013, UL, FM, IAPMO, AWWA C511

Description

The 3-inch FEBCO MasterSeries LF860 Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water systems from high hazard (toxic) backpressure and backsiphonage. This lead-free assembly features a durable ductile iron body with ArmorTek® epoxy coating for superior corrosion and microbial-induced corrosion resistance. It includes domestic outside stem and yoke (OSY) shutoff valves, stainless steel relief valve seats, and a SentryPlus Alert® flood sensor for detecting excessive water discharges. Engineered for inline serviceability without special tools, it ensures reliable performance and easy maintenance in industrial and commercial applications. Item number F683099.

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Flood Sensor Connectivity

  • The integrated SentryPlus Alert® flood sensor requires an add-on connection kit for activation and communication.
  • Connection kit options include those for Building Management Systems (BMS), cellular network communication, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
  • Without a connection kit, the flood sensor remains a passive component and will not communicate with other devices.
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Additional Details

The 3 inch FEBCO MasterSeries LF860 Reduced Pressure Zone assembly is designed to protect potable drinking water systems from high hazard/toxic backpressure and backsiphonage conditions, commonly used in industrial installations.

This lead-free assembly features a robust ductile iron body with a patented ArmorTek® coating for enhanced corrosion resistance, combined with a flood sensor for proactive leak detection.

Key Features

  • Designed for high hazard/toxic backpressure and backsiphonage protection.
  • Lead Free construction: wetted surfaces contain less than 0.25% lead by weight.
  • ArmorTek® advanced epoxy coating on internal and external iron components to resist microbial-induced corrosion (MIC) and protect metal substrate.
  • SentryPlus Alert® flood sensor detects excessive water discharges from the relief valve, capable of triggering multichannel alerts (call, email, text) when paired with an add-on connection kit.
  • Stainless steel relief valve seat and check components ensure maximum performance and durability.
  • Inline serviceable design requires no special tools for maintenance.
  • Equipped with domestic outside stem and yoke (OSY) resilient seated gate valves.
  • Modular and repairable pressure differential relief valve and clapper check assembly.
  • Reversible and replaceable discs and field replaceable seats.

An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component that does not communicate with any other device. Proper drainage is required in the event of a discharge.

Specifications

  • Assembly Type: Reduced Pressure Zone (RPZ)
  • Size: 3 inch
  • Connection Type: Flanged
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Relief Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek® powder coating (internal and external)
  • Shutoff Valves: OSY resilient wedge gate valve AWWA C515 (UL Classified and FM Approved)
  • Check Seats Material: Stainless steel
  • Relief Valve Seat Material: Stainless steel
  • Disc Holder Material: Stainless steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless steel

Pressure and Temperature

  • Max. Working Pressure: 175 psi (12.1 bar)
  • Min. Working Pressure: 20 psi (1.4 bar)
  • Hydrostatic Test Pressure: 350 psi (24.1 bar)
  • Hydrostatic Safety Pressure: 700 psi (48.3 bar)
  • Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) continuous

Certificates & Approvals

  • Approved by Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
  • ASSE 1013 Listed
  • UL Classified (US & Canada)
  • FM Approved
  • IAPMO
  • AWWA Standard C511 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • CSA B64.4
  • NSF/ANSI 61-G Certified

FAQs

What is the primary purpose of the FEBCO MasterSeries LF860 backflow preventer?

Its primary purpose is to protect potable drinking water systems from contamination due to backpressure and backsiphonage conditions involving high hazard or toxic fluids, commonly found in industrial and commercial settings.

Is this backflow preventer assembly lead-free?

Yes, the FEBCO MasterSeries LF860 features lead-free construction. The wetted surfaces of the product contain less than 0.25% lead by weight, complying with low lead installation requirements.

How does the ArmorTek® coating benefit this backflow preventer?

The ArmorTek® coating is a patented three-part advanced epoxy system applied to the iron components. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate, thereby enhancing the durability and lifespan of the assembly.

What is the function of the integrated flood sensor?

The SentryPlus Alert® flood sensor detects excessive water discharges from the relief valve. When paired with an add-on connection kit, it can relay a signal to trigger multichannel alerts (call, email, text) to notify personnel about potential flooding events.

What shutoff valves are included with this assembly?

This assembly is fitted with domestic outside stem and yoke (OSY) resilient seated gate valves, which are UL Classified and FM Approved in accordance with AWWA C515 standards.

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