10 LF866-DOSY-GPM-FS

Item Number: F683172
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$58,410.24
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 10 inch
  • Weight: 1240.0 lb
  • Lead Free Construction
  • Body Material: Ductile Iron with ArmorTek Coating
  • Maximum Working Pressure: 175 PSI
  • Flood Sensor: SentryPlus Alert Technology
  • Bypass Meter: Gallons Per Minute (GPM)
  • Shutoff Valves: OS&Y Resilient Wedge Gate Valves
  • UL Classified and FM Approved

Description

The FEBCO 10 inch Lead Free MasterSeries LF866 Reduced Pressure Zone Detector Backflow Preventer Assembly is engineered to safeguard potable water systems from high hazard backpressure and backsiphonage. Its ductile iron body is coated with ArmorTek® for superior corrosion resistance. This assembly includes OS&Y shutoff valves, a GPM metered bypass for leak detection, and a SentryPlus Alert® flood sensor to detect relief valve discharge. It is UL Classified and FM Approved, ensuring reliability and compliance for industrial installations. Item number F683172.

Help Me Connect

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit to be activated.
  • Connection kit options allow for communication via Building Management Systems (BMS), cellular networks, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.

Main Line Connections

  • The main assembly features end connections compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 10 inch lead free FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Backflow Preventer Assembly is designed to protect potable drinking water systems from high hazard (toxic) backpressure and backsiphonage conditions in accordance with Local Governing Water Utility Codes.

Primary Use

  • Protects potable drinking water systems from non-potable quality water being pumped or siphoned back into the potable system.
  • Suitable for high hazard/toxic applications in industrial installations.

Construction & Materials

  • Constructed with a ductile iron body for durability.
  • Features ArmorTek®, a patented three-part advanced epoxy system applied to internal and external surfaces, engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Includes stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Equipped with UL Classified and FM Approved OS&Y resilient wedge gate valves.
  • Lead Free construction to comply with low lead installation requirements.

Flood Detection System

  • Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • Relays a signal for potential flooding when an add-on connection kit is activated.
  • 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.
  • Connection kit options include BMS, cellular communication, or the Sensor Control Monitor for integration with Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi.

Auxiliary Bypass

  • Compact design, remains within the main valve assembly profile.
  • Features an inline serviceable 3/4" check assembly with field replaceable seat and disc.
  • Designed to detect potential underground water leaks and unauthorized water usage.
  • Includes a gallons per minute (GPM) metered bypass that complies with ANSI/AWWA C700.

Key Features

  • Inline serviceable assembly requires no special tools for maintenance.
  • Designed with captured modular spring assemblies and O-rings.
  • Features reversible and replaceable discs and field replaceable seats.
  • Includes four properly located resilient seated test cocks.

Specifications

  • Product Type: Reduced Pressure Zone Detector Backflow Preventer
  • Model: LF866
  • Size: 10 inch
  • Lead Free: Yes
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Relief Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating on internal and external surfaces
  • Shutoff Valves: OS&Y resilient wedge gate valve (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
  • Bypass Meter: 5/8" x 3/4" GPM Water Meter (ANSI/AWWA C700 Compliant)
  • Flood Sensor: SentryPlus Alert technology on relief valve
  • Assembly Flow Orientation: Horizontal

Pressure and Temperature

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Minimum 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

  • Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
  • ASSE 1047
  • UL Classified (US & Canada)
  • FM Approved
  • IAPMO/CUPC
  • AWWA Standard C511 Compliant

Connections

  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary function of the FEBCO LF866 backflow preventer?

This assembly is designed to protect potable drinking water systems from contamination due to high hazard backpressure and backsiphonage conditions, commonly found in industrial applications.

How does the ArmorTek® coating enhance this product?

ArmorTek® is a patented three-part advanced epoxy system applied to the ductile iron body to reduce microbial-induced corrosion (MIC) and protect exposed metal surfaces, thereby extending the assembly's lifespan.

What is the purpose of the integrated flood sensor?

The flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. When paired with an add-on connection kit, it can relay alerts for potential flooding events.

Are special tools required for servicing the check modules?

No, the inline serviceable assembly design allows for servicing of both check modules without requiring any special tools.

What certifications and approvals does this backflow preventer hold?

The FEBCO LF866 assembly is ASSE 1047, UL Classified, FM Approved, IAPMO/CUPC, and AWWA Standard C511 Compliant, indicating high standards of performance and safety.

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