8 LF866-OSY-CFM-FS

Item Number: F683183
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$42,860.01
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 8 inch
  • Weight: 835.0 lb
  • Lead Free construction
  • ArmorTek® Coating: Advanced corrosion protection
  • Flood Sensor: SentryPlus Alert® technology
  • Bypass Meter: Cubic feet per minute (CFM)
  • Max. Working Pressure: 175 psi
  • Approvals: ASSE 1047, UL Classified, FM Approved

Description

This 8 inch Lead Free MasterSeries® LF866V Reduced Pressure Zone Detector Assembly from FEBCO is designed to protect potable water systems from backpressure and backsiphonage conditions in high hazard/toxic applications. It complies with Local Governing Water Utility Codes, making it ideal for industrial installations. The assembly features a durable ductile iron body with ArmorTek® advanced epoxy coating for superior corrosion resistance and extended life. Key components include OS&Y shutoff valves, replaceable stainless steel check seats, and a CFM metered bypass for leak detection. An integrated flood sensor with SentryPlus Alert® technology provides early warning for excessive relief valve discharges, requiring an optional connection kit for activation. Item number F683183.

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Product Connections

  • This 8 inch backflow preventer features flanged end connections. These connections are compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards, ensuring compatibility with standard flanged piping systems.

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit to become active and communicate alerts.
  • Available connection kit options support communication via BMS, cellular networks, or integration with BAS via RS-485 Modbus and the Nexa® platform through Wi-Fi.
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Additional Details

This 8 inch Lead Free MasterSeries® LF866V Reduced Pressure Zone Detector Assembly from FEBCO is designed to protect potable drinking water systems against backpressure and backsiphonage conditions for high hazard/toxic applications, as mandated by Local Governing Water Utility Codes, particularly in industrial installations.

The assembly incorporates ArmorTek®, a patented three-part advanced epoxy system, which coats the iron components to significantly reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, ensuring extended valve life and dependable performance.

Key Components & Features

  • Ductile iron body construction with ArmorTek® advanced epoxy coating for corrosion resistance
  • Lead Free construction to comply with low lead installation requirements
  • OS&Y (Outside Stem and Yoke) resilient wedge gate shutoff valves
  • Replaceable stainless steel check seats and stainless steel relief valve seat for maximum durability
  • Cubic feet per minute (CFM) metered bypass for detecting leaks or unauthorized water usage
  • Ball valve test cocks for easy testing
  • Flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve
  • Modular and repairable pressure differential relief valve
  • Inline serviceable assembly and check assembly requiring no special tools
  • Captured modular spring assembly, reversible and replaceable discs, and captured O-ring design

Flood Detection System

  • The integrated flood sensor provides alerts for potential flooding events due to excessive water discharge.
  • An add-on connection kit is required to activate the flood sensor. Without this kit, the flood sensor acts as a passive component and does not communicate with other devices.
  • Connection kit options include BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Specifications

General

  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Size: 8 inch
  • Bypass Meter Type: Cubic Feet per Minute (CFM)
  • Installation: Horizontal
  • Lead Content: Less than 0.25% by weight (wetted surface)

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)
  • Shutoff Valves: OS&Y 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 Ratings

  • 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

End Connections

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

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

FAQs

What is the primary purpose of the FEBCO 8 LF866-OSY-CFM-FS assembly?

This assembly is designed to protect potable drinking water systems from contamination due to backpressure and backsiphonage conditions, especially in high hazard/toxic applications, adhering to Local Governing Water Utility Codes.

Is this backflow preventer lead-free?

Yes, the FEBCO 8 LF866-OSY-CFM-FS features Lead Free construction, meaning the wetted surface of this product contains less than 0.25% of lead by weight, complying with low lead installation requirements.

How does the ArmorTek® coating benefit the assembly?

The ArmorTek® coating is a patented three-part advanced epoxy system applied to the ductile iron body. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, significantly extending the product's lifespan and maintaining performance.

How does the flood sensor feature work, and what is required to activate it?

The assembly includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. To activate the sensor and enable communication of alerts (e.g., via BMS, cellular, or Wi-Fi), an add-on connection kit is required. Without the kit, the sensor is passive.

What type of bypass meter is included with this assembly?

This model includes a Cubic Feet per Minute (CFM) metered bypass. This bypass line is designed to detect potential underground water leaks or unauthorized water usage within the system.

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