2.5 LF866-DOSY-CFM-FS

Item Number: F683163
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$11,967.47
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 2 1/2 inch
  • Weight: 218.0 lb
  • Product Type: Reduced Pressure Zone Detector Assembly
  • Lead Free: Wetted surfaces contain less than 0.25% lead
  • Coating: ArmorTek® advanced epoxy for corrosion resistance
  • Flood Detection: SentryPlus Alert® flood sensor included
  • Maximum Working Pressure: 175 PSI
  • Minimum Working Pressure: 20 PSI
  • Shutoff Valves: OSY resilient wedge gate valves

Description

This 2 1/2 inch FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly is engineered to protect potable water systems from high hazard backpressure and backsiphonage. It features Lead Free construction, with wetted surfaces containing less than 0.25% lead. The ductile iron body is coated with ArmorTek® advanced epoxy system for superior corrosion resistance, including protection against microbial-induced corrosion. Key components like the relief valve seat and check components are made of stainless steel for durability. An integrated SentryPlus Alert® flood sensor detects excessive discharges, which can relay alerts when paired with an add-on connection kit. The assembly has a maximum working pressure of 175 PSI and includes OSY shutoff valves and a CFM metered bypass.

Help Me Connect

Flood Sensor Connectivity

  • The integrated SentryPlus Alert® flood sensor requires an add-on connection kit to activate its communication features.
  • Without a connection kit, the flood sensor operates as a passive component and does not relay alerts.
  • Compatible connection kit options include those for Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

This 2 1/2 inch FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly is engineered to protect potable drinking water systems from backpressure and backsiphonage of high hazard (toxic) fluids.

It is suitable for industrial installations and applications, ensuring compliance with Local Governing Water Utility Codes.

Key Features

  • Lead Free construction: Complies with low lead installation requirements; wetted surfaces contain less than 0.25% lead by weight.
  • ArmorTek® Coating: Patented three-part advanced epoxy system applied to iron components for advanced corrosion resistance, protecting against microbial-induced corrosion (MIC) and exposed metal substrate.
  • SentryPlus Alert® Flood Sensor: Detects excessive water discharges from the relief valve, capable of relaying signals for potential flooding alerts when paired with an add-on connection kit.
  • Ductile Iron Body: Provides robust and durable construction.
  • Stainless Steel Components: Includes a stainless steel relief valve seat and stainless steel check components for maximum performance and durability, along with replaceable stainless steel check seats.
  • Inline Serviceability: Designed for easy maintenance without requiring special tools.
  • Metered Bypass: Features a cubic feet per minute (CFM) metered bypass.

An add-on connection kit is required to activate the flood sensor for communication; without the kit, the sensor is passive.

Specifications

  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Size: 2 1/2 inch
  • Lead Free: Yes (wetted surfaces contain less than 0.25% lead by weight)
  • Bypass Meter: Cubic Feet per Minute (CFM)
  • Detector: Flood sensor with SentryPlus Alert® technology

Materials

  • Main Valve Body: Ductile Iron Grade 65-45-12
  • Relief Valve Body: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek powder coating
  • 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

Pressure & Temperature

  • Maximum Working Pressure: 175 PSI
  • Minimum Working Pressure: 20 PSI
  • Hydrostatic Test Pressure: 350 PSI
  • Hydrostatic Safety Pressure: 700 PSI
  • Temperature Range: 33°F – 140°F (0.5°C – 60°C) continuous

Certificates & Approvals

  • Foundation for Cross-Connection Control and Hydraulic Research at USC (FOCCCHR-USC)
  • ASSE 1047
  • UL Classified (US & Canada)
  • FM Approved
  • IAPMO/cUPC
  • AWWA Standard C511 Compliant
  • Cfd Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary use of the FEBCO MasterSeries LF866 backflow preventer?

This assembly is designed to protect potable drinking water systems from contamination due to backpressure and backsiphonage of high hazard (toxic) fluids. It is typically used in industrial installations where local codes mandate such protection.

Is this product compliant with lead-free requirements?

Yes, the FEBCO MasterSeries LF866 features Lead Free construction. The wetted surfaces of this product that come into contact with consumable water contain less than 0.25% of lead by weight.

What is ArmorTek® coating, and what does it do?

ArmorTek® is a patented three-part advanced epoxy system applied to the iron components of the backflow preventer. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing the unit's longevity and performance.

How does the SentryPlus Alert® flood sensor work?

The flood sensor detects excessive water discharges from the relief valve. When an add-on connection kit is installed, the sensor can relay a signal to trigger multichannel alerts (call, email, text) to notify personnel of potential flooding. Without the kit, the sensor is passive.

What is the maximum operating pressure for this backflow preventer?

The maximum working pressure for the FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly is 175 PSI. The minimum working pressure is 20 PSI.

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