6 LF860-DNRS-FS

Item Number: F683107
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$19,336.72
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 6 inch
  • Weight: 635.0 lb
  • Lead Free Construction
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek® advanced epoxy coating
  • Shutoff Valves: Domestic Non-Rising Stem (NRS)
  • Relief Valve Seat: Stainless Steel
  • Maximum Working Pressure: 175 psi
  • Flood sensor with SentryPlus Alert® technology

Description

This 6 inch Lead Free MasterSeries® LF860 Reduced Pressure Zone Assembly provides critical protection against backpressure and backsiphonage in potable water systems handling high hazard or toxic fluids, commonly found in industrial settings. Its ductile iron body is treated with ArmorTek® advanced epoxy coating for superior corrosion resistance. Key components like the relief valve seat and check components are stainless steel for durability and extended service life. The assembly includes a flood sensor with SentryPlus Alert® technology, which, when activated by an add-on connection kit, detects excessive water discharge. It operates within a 33°F to 140°F range and a maximum working pressure of 175 psi.

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Flood Sensor Connectivity

This backflow preventer features an integrated flood sensor. To activate and utilize the flood detection capabilities, an add-on connection kit is required. Without this kit, the sensor operates as a passive component and will not communicate alerts.

  • Connection kit options include: BMS (Building Management System), cellular communication, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with BAS (Building Automation Systems) via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity.
  • A retrofit sensor connection kit is also available for existing installations.
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Additional Details

This 6 inch Lead Free MasterSeries® LF860 Reduced Pressure Zone Assembly is designed to protect potable water systems against backpressure and backsiphonage from high hazard (toxic) fluids, primarily in industrial installations.

Key Features

  • Ductile iron valve body coated with ArmorTek®, a patented three-part advanced epoxy system engineered to resist microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Features a stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Equipped with domestic non-rising stem (NRS) resilient seated gate valves.
  • Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve, triggering multichannel alerts (call, email, text) when activated by an add-on connection kit.

Design & Serviceability

  • Inline serviceable assembly; no special tools required.
  • Captured modular spring assembly.
  • Reversible and replaceable discs.
  • Field replaceable seats.
  • Modular and repairable pressure differential relief valve.
  • Clapper check assembly.
  • Captured O-ring design.

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. Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide proper drainage in the event of a discharge.

Specifications

  • Size: 6 inch
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek® powder coating
  • Relief Valve Body Material: Ductile Iron Grade 65-45-12
  • Shutoff Valves: NRS Resilient Wedge Gate Valve AWWA C509
  • Check Seats: Stainless steel
  • Relief Valve Seal: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring Material: Stainless steel

Performance Ratings

  • 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 (FCCC/HR-USC) Approved
  • ASSE 1013 Listed
  • cUL Classified™ (US & Canada)
  • FM Approved®
  • IAPMO
  • AWWA Standard C511 Compliant
  • CSA B64.4
  • CFD Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary purpose of the FEBCO 6 inch LF860 Reduced Pressure Zone Assembly?

The primary purpose is to protect potable drinking water systems from contamination due to backpressure and backsiphonage of high hazard or toxic fluids, typically in industrial applications.

What materials are used in the construction of this backflow preventer for durability?

It features a ductile iron body with ArmorTek® advanced epoxy coating for corrosion resistance. Key internal components like the relief valve seat and check components are made of stainless steel.

How does the flood sensor function, and what is needed to activate it?

The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. An add-on connection kit is required to activate the sensor and enable it to relay multichannel alerts.

What are the operating pressure and temperature limits for this assembly?

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

Are special tools required to service the LF860 assembly?

No, the LF860 is designed as an inline serviceable assembly, and no special tools are required for maintenance.

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