2.5 LF866-DOSY-LM-FS

Item Number: F683186
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$11,902.49
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Weight: 218.0 lb
  • Size: 2 1/2 inch
  • Lead Free: Yes (<0.25% lead by weight)
  • Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek advanced epoxy system
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Features flood sensor for discharge detection

Description

The FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly, 2 1/2 inch, is a lead-free backflow preventer designed to protect potable water systems from high hazard/toxic backpressure and backsiphonage. Its ductile iron body is coated with ArmorTek, a patented 3-part advanced epoxy system, providing superior corrosion resistance. This assembly features a stainless steel relief valve seat and check components for durability, along with domestic OSY shutoff valves. An integrated flood sensor detects excessive water discharge, offering alerts when paired with an add-on connection kit. It is rated for a maximum working pressure of 175 psi and a temperature range of 33°F to 140°F. Item number F683186.

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Compatibility & Connections

  • This 2 1/2 inch Reduced Pressure Zone Detector Assembly is designed for installation on potable drinking water systems.
  • It connects to a water supply at points of cross-connection to protect against backpressure and backsiphonage for high hazard/toxic applications.
  • End connections are compliant with ASME B16.1 Class 125 and AWWA Class D Flange.
  • The integral flood sensor can be activated with an add-on connection kit (sold separately) for enhanced communication.
  • Connection kit options include those for Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor, which integrates with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa platform via Wi-Fi.
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Additional Details

The FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly, 2 1/2 inch, provides protection against backpressure and backsiphonage in high hazard/toxic applications, primarily on potable drinking water systems.

This lead-free assembly features a ductile iron body and domestic outside stem and yoke (OSY) shutoff valves, designed for durability and performance in accordance with local governing water utility codes.

Construction & Coating

  • The assembly's iron components are coated with ArmorTek®, a patented three-part advanced epoxy system, to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates.
  • Features a robust ductile iron valve body design.
  • Lead Free construction ensures compliance with low lead installation requirements.

Main Valve Features

  • Equipped with a stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Designed as an inline serviceable assembly, allowing maintenance without special tools.
  • Includes captured modular spring assembly and reversible and replaceable discs for easy servicing.
  • Features field replaceable seats and a captured O-ring design.
  • Incorporates a modular and repairable pressure differential relief valve and clapper check assembly.

Flood Detection

  • A flood sensor on the relief valve detects excessive water discharges.
  • When paired with an add-on connection kit (sold separately), the sensor relays a signal for multichannel alerts (call, email, text) to notify personnel of potential flooding.
  • Without the connection kit, the flood sensor is a passive component and does not communicate with other devices. The use of this sensor does not replace compliance with all required installation, operation, and maintenance instructions, codes, and regulations.

Specifications

General

  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Size: 2 1/2 inch
  • Lead Free: Yes (Wetted surface contains <0.25% lead by weight)
  • Assembly Flow Orientation: Horizontal

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Relief Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating (internal and external surfaces)
  • Shutoff Valves: OSY resilient wedge gate valve (UL Classified and FM Approved)
  • Check Seats: Stainless steel
  • Relief Valve Seat: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring: Stainless steel

Performance

  • 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

Approvals & Standards

  • FCCCHR-USC Approved
  • ASSE 1047 Approved
  • UL Classified (US & Canada)
  • FM Approved
  • IAPMO/CUPC Approved
  • AWWA Standard C511 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary use of the FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly?

It is designed to protect potable drinking water systems from backpressure and backsiphonage in high hazard/toxic applications, complying with local water utility codes.

Is this backflow preventer lead-free?

Yes, it features lead-free construction, with the wetted surface containing less than 0.25% lead by weight, complying with low lead installation requirements.

What type of coating is used on the assembly and what are its benefits?

The assembly's iron components are coated with ArmorTek®, a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates.

How does the flood sensor function on this assembly?

The integral flood sensor detects excessive water discharges from the relief valve. When an add-on connection kit (sold separately) is installed, the sensor can relay signals for multichannel alerts (call, email, text) to notify personnel of potential flooding. Without the kit, it remains passive.

What are the maximum operating pressure and temperature range for this device?

This assembly has a maximum working pressure of 175 psi (12.1 bar) and operates within a continuous temperature range of 33°F to 140°F (0.5°C to 60°C).

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