8 LF866-DOSY-LM-FS

Item Number: F683190
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$42,795.00
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 design
  • Body Material: Ductile Iron Grade 65-45-12
  • ArmorTek® powder coating for enhanced corrosion resistance
  • OSY resilient wedge gate shutoff valves
  • Maximum Working Pressure: 175 psi
  • Flood sensor with SentryPlus Alert® technology
  • Approved for high hazard applications

Description

The 8 inch FEBCO MasterSeries® LF866 Reduced Pressure Detector Backflow Preventer Assembly, SKU F683190, is engineered to safeguard potable water systems from high hazard toxic fluids in industrial and commercial installations. Its ductile iron body is protected by ArmorTek® powder coating for superior corrosion resistance and longevity. Key features include OSY resilient wedge gate shutoff valves, stainless steel internal components, and a flood sensor with SentryPlus Alert® technology for early discharge detection. With a maximum working pressure of 175 psi and multiple certifications including ASSE 1047 and FM Approved, it ensures reliable and compliant backflow protection.

Help Me Connect

Connections

  • This assembly features CFC connections compliant to ASME B16.1 Class 125 and AWWA C110/A21.10 Class D Flange standards.
  • The bypass line incorporates a 5/8 inch or 3/4 inch meter compliant to ASSE 1047 and/or AWWA Standard C700.
  • The shutoff valves are OSY resilient wedge gate valves compliant with AWWA C515.
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Additional Details

This 8 inch FEBCO MasterSeries® LF866 Reduced Pressure Detector Backflow Preventer Assembly is designed to protect potable water systems from high hazard (toxic) fluids in industrial installations and applications.

Features

  • Features a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve.
  • Compatible with an add-on sensor connection kit for extended flood monitoring.
  • Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa® platform by Wi-Fi connectivity.
  • Durable ductile iron body construction with patented 3-part ArmorTek® epoxy coating system designed to limit both microbial induced (MIC) and exposed metal substrate corrosion.
  • Combines the use of a stainless-steel relief valve seat and stainless-steel check components for maximum performance and durability.
  • Includes a detector bypass assembly.
  • Appropriate for health hazard applications.

Construction Details

  • Body Material: Ductile iron
  • Equipped with ball valve test cocks.
  • Features replaceable stainless steel check seats.
  • Includes domestic outside stem and yoke (OSY) shutoff valves.

Specifications

  • Size: 8 inch
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Relief Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating, applied to internal and external surfaces
  • 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 & Temperature 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

Certificates & Approvals

  • Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (FOCCCHR-USC)
  • ASSE 1047
  • UL Classified** (US & Canada)
  • FM Approved**
  • IAPMO/cUPC
  • AWWA Standard C511 Compliant
  • CFC Connections: Compliant to ASME B16.1 Class 125 & AWWA C110/A21.10 Class D Flange

FAQs

What is the primary application for this backflow preventer?

This backflow preventer is designed for high hazard (toxic) fluid applications in industrial installations and other settings where protecting potable water systems from contamination is critical.

What materials are used in the main components of this assembly?

The main valve body and relief valve body are made from Ductile iron Grade 65-45-12. Internal components like check seats, relief valve seat, disc holder, and springs are stainless steel, while the elastomer disc is silicone.

What is ArmorTek® coating and what are its benefits?

ArmorTek® is a patented 3-part advanced epoxy coating system applied to the internal and external surfaces of the ductile iron body. It is designed to limit microbial induced (MIC) and exposed metal substrate corrosion, extending the product's lifespan.

Does this backflow preventer include a flood detection feature?

Yes, this assembly is equipped with a flood sensor featuring SentryPlus Alert® technology. It is designed to detect excessive water discharges from the relief valve and can be integrated with an add-on connection kit for remote alerts.

What is the maximum operating pressure for this 8-inch backflow preventer?

The maximum working pressure for this 8-inch FEBCO LF866 backflow preventer is 175 psi (12.1 bar).

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