6 LF866-OSY-CFM-FS

Item Number: F683181
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$24,489.60
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Nominal Size: 6 inch
  • Weight: 520.0 lb
  • Lead Free ductile iron construction with ArmorTek® coating
  • OSY shutoff valves (UL Classified and FM Approved)
  • Stainless steel relief valve seat and check components
  • Cubic feet per minute (CFM) metered bypass for leak detection
  • Integrated flood sensor with SentryPlus Alert® technology
  • Maximum Working Pressure: 175 psi
  • Approved by ASSE 1047, UL Classified, FM Approved

Description

The FEBCO MasterSeries LF866 Reduced Pressure Zone Detector Assembly, 6 inch with OSY shutoff valves, provides crucial protection against high hazard backpressure and backsiphonage in potable water systems. Its ductile iron body features ArmorTek® epoxy coating for superior corrosion resistance, complemented by stainless steel internal components for extended durability. This lead-free assembly includes a cubic feet per minute (CFM) metered bypass to detect leaks and unauthorized usage, and an integrated flood sensor to alert for relief valve discharge when paired with a connection kit. It is designed for industrial installations and applications requiring robust backflow prevention.

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Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit to activate alert functionalities for potential flooding events.
  • Connection kit options include BMS (Building Management Systems), cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Bypass Line Monitoring

  • The auxiliary bypass line is designed to detect potential underground water leaks and unauthorized water usage within the water system.

Main Valve Connections

  • The assembly's end connections are compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 6 inch Lead Free MasterSeries® Reduced Pressure Zone Detector Backflow Preventer Assembly is designed to protect against backpressure and backsiphonage conditions for high hazard/toxic fluids in water services to industrial installations and applications.

The assembly features OSY (Outside Stem and Yoke) shutoff valves, a ductile iron body, replaceable stainless steel check seats, a cubic feet per minute (CFM) metered bypass, and ball valve test cocks. The ductile iron body is fused with patented 3-part ArmorTek® epoxy coating for advanced corrosion resistance, delivering integrated protection against electrochemical and microbial-induced corrosion. Improved with a stainless-steel relief valve seat, these rugged assemblies yield greater dependability and extended valve life.

The assembly includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. When paired with an add-on connection kit, the sensor is activated to relay alerts for potential flooding events. 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.

Main Valve Features

  • Stainless steel relief valve seat and stainless steel check components for maximum performance and durability
  • Inline serviceable assembly; no special tools required
  • Captured modular spring assembly
  • Reversible and replaceable discs
  • Field replaceable seats
  • Ductile iron valve body design
  • ArmorTek® coating technology to resist corrosion of internals
  • Modular and repairable pressure differential relief valve
  • Clapper check assembly
  • Captured O-ring design
  • Sensor on relief valve for flood detection, activated by add-on connection kit for BMS or cellular network communication

Auxiliary Bypass Features

  • Compact design; remains in main valve assembly profile
  • Inline serviceable 3/4 inch check assembly; no special tools required
  • Field replaceable seat and disc
  • Detect potential underground water leaks
  • Detect unauthorized water usage

Specifications

  • Nominal Size: 6 inch
  • Body Material: Ductile iron Grade 65-45-12
  • Relief Valve Body Material: 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), AWWA C515 Compliant
  • 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" Cubic feet per minute (CFM) Water Meter, ANSI/AWWA C700 Compliant
  • Flood Sensor: Integrated SentryPlus Alert® technology

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

FAQs

What is the primary function of the FEBCO MasterSeries LF866 assembly?

The primary function of this assembly is to protect potable drinking water systems from backpressure and backsiphonage conditions, specifically for high hazard/toxic applications in industrial installations.

What is ArmorTek® coating, and what are its benefits?

ArmorTek® 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 against electrochemical corrosion, enhancing the assembly's durability and lifespan.

How does the flood sensor feature work?

The flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate real-time alerts (call, email, text), an add-on connection kit is required; without it, the sensor acts as a passive component.

What are the maximum and minimum operating pressures for this backflow preventer?

The maximum working pressure for this assembly is 175 psi (12.1 bar), and the minimum working pressure is 20 psi (1.4 bar).

What type of shutoff valves does this assembly include?

This assembly is fitted with UL Classified and FM Approved OSY (Outside Stem and Yoke) resilient seated shutoff valves, which comply with ANSI/AWWA C515.

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