8 LF860-DNRS-FS

Item Number: F683108
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$33,853.07
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • 8 inch nominal size
  • Weight: 1020.0 lb
  • Lead free construction
  • Ductile iron body with ArmorTek® powder coating
  • Includes domestic Non-Rising Stem (NRS) shutoff valves
  • Stainless steel relief valve seat and check components
  • SentryPlus Alert® flood sensor for relief valve discharge
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F continuous

Description

This 8-inch lead-free MasterSeries® reduced pressure zone backflow preventer assembly safeguards potable water from high-hazard contaminants in industrial and commercial applications. Its ductile iron body is protected by ArmorTek® epoxy coating for superior corrosion resistance, complemented by stainless steel relief valve and check components for durability. Featuring non-rising stem shutoff valves, the assembly includes a SentryPlus Alert® flood sensor to detect continuous relief valve discharge, with optional connectivity for remote alerts via BMS, cellular, or Wi-Fi. It is ASSE 1013, UL Classified, FM Approved, IAPMO, AWWA C511, and CSA B64.4 certified, operating up to 175 psi across 33-140°F.

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Connections

  • This 8 inch backflow preventer assembly features flanged end connections compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.

Flood Sensor Connectivity

  • The integrated SentryPlus Alert® flood sensor can be connected to external systems using an add-on sensor connection kit (sold separately).
  • Connection kit options allow for integration with Building Management Systems (BMS), cellular communication networks, or the Sensor Control Monitor.
  • The Sensor Control Monitor enables communication with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

This 8 inch lead free MasterSeries® reduced pressure zone backflow preventer assembly protects against high hazard (toxic) fluids in water services for industrial installations and applications. This assembly features an epoxy coated ductile iron body, domestic non-rising stem resilient seated gate valves, test cocks, spring loaded check valves, and a pressure differential relief valve.

Advanced Protection & Durability

  • ArmorTek® powder coating, a patented 3-part advanced epoxy coating system, is applied to internal and external surfaces of the ductile iron body to limit both microbial induced (MIC) and exposed metal substrate corrosion.
  • Incorporates a stainless-steel relief valve seat and stainless-steel check components for maximum performance and durability, ensuring greater dependability and extended valve life.
  • Inline serviceable assembly designed for maintenance without special tools.
  • Features captive modular spring assembly, replaceable and replicable discs, and field replaceable seats.
  • Captured O-ring design.

Flood Detection & Monitoring

  • Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • When paired with an add-on sensor connection kit (available separately), the sensor activates to relay alerts for potential flooding events.
  • Connection kit options support integration with Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity.

Certifications & Standards Compliance

  • Lead free construction suitable for health hazard applications.
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC).
  • ASSE 1013 Listed and UL Classified (US & Canada).
  • FM Approved and IAPMO certified.
  • Complies with AWWA Standard C511 for flow and pressure loss performance.
  • End connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Nominal 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 (internal & external surfaces)
  • Shutoff Valves: NRS resilient wedge gate valve AWWA C509
  • Check Seats Material: Stainless steel
  • Relief Valve Seat Material: Stainless steel
  • Disc Holder Material: Stainless steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless steel
  • Flood Sensor: SentryPlus Alert® technology

Pressure & Temperature 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

  • Approved by: Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
  • Certification: ASSE 1013 Listed
  • Certification: UL Classified (US & Canada)
  • Certification: FM Approved
  • Certification: IAPMO
  • Certification: AWWA Standard C511 Compliant
  • Certification: End Connections compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • Certification: CSA B64.4

FAQs

What is the primary purpose of the 8-inch LF860-DNRS-FS backflow preventer?

This backflow preventer is designed to protect potable water supplies from high-hazard (toxic) contaminants, specifically preventing backpressure and backsiphonage in industrial and commercial water service applications.

What type of coating is used on the body of this backflow preventer?

The ductile iron body features ArmorTek® powder coating, a patented 3-part advanced epoxy coating system applied internally and externally to resist electrochemical corrosion and microbial-induced growth.

Does this backflow preventer have a flood detection feature?

Yes, it includes a SentryPlus Alert® flood sensor on the relief valve. This technology detects excessive water discharges from the relief valve, and with an optional add-on connection kit, it can relay alerts.

What are the temperature and pressure ratings for this assembly?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

What certifications does the 8-inch LF860-DNRS-FS assembly hold?

It is ASSE 1013 Listed, UL Classified (US & Canada), FM Approved, IAPMO, AWWA Standard C511 Compliant, and CSA B64.4 certified. It is also approved by the Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC).

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