8 LF850-DNRS

Item Number: 0683084
1 1
$24,395.62
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 8 inch
  • Weight: 980.0 lb
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek 3-part advanced epoxy system
  • Shutoff Valves: Domestic Non-Rising Stem (NRS)
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Approvals: ASSE 1015, UL Classified, FM Approved, IAPMO, CSA Listed, NSF/ANSI 61-G
  • In-line serviceable design for easy maintenance

Description

The 8 inch FEBCO LF850-DNRS MasterSeries® double check valve backflow preventer assembly is designed for non-health hazard applications, preventing backflow of polluted water into potable water supplies. Featuring a durable ductile iron body with ArmorTek® advanced epoxy coating, it resists microbial induced corrosion (MIC) and exposed metal substrate corrosion. This assembly includes domestic non-rising stem shutoff valves, top-mounted test cocks, and stainless steel check components. It ensures protection in continuous pressure piping systems and is approved by ASSE 1015, UL, FM, and NSF/ANSI 61-G. Its modular design allows for easy in-line maintenance.
View full details

Additional Details

This 8 inch lead free MasterSeries® double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage and/or backpressure in accordance with national plumbing codes and water authority requirements.

Its compact modular design facilitates easy maintenance for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards and for other non-toxic contaminants at the service line entrance.

Features

  • In-line serviceable assembly
  • No special tools required for servicing
  • Captured modular spring assembly
  • Reusable and replaceable discs
  • Field replaceable seats
  • Ductile iron valve body design
  • Stainless steel check components
  • ArmorTek coating technology to resist corrosion of internals
  • Winterization feature with disc retainers and valve body drain cocks
  • Clapper check assembly
  • Commonality between 1st and 2nd check components
  • Captured O-ring design

Advanced Coating Technology

The coating on this backflow assembly uses ArmorTek®, a patented three-part advanced epoxy coating system designed to limit both microbial induced corrosion (MIC) and exposed metal substrate corrosion, reducing lead leach-in and protecting internal and external surfaces.

Specifications

  • Size: 8 inch
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating
  • Shutoff Valves: NRS resilient wedge gate valves AWWA C509
  • Check Seats Material: Stainless steel
  • Disc Holder Material: Stainless steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless steel
  • Clamp: AWWA C606 (10" only)

Pressure and Temperature Ratings

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Minimum Working Pressure: 10 psi (0.7 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 the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
  • ASSE 1015 Listed
  • UL Classified (U.S. & Canada)
  • FM Approved
  • IAPMO
  • CSA Listed
  • AWWA Standard C510 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • NSF Certified to NSF/ANSI 61-G
  • CSA B64.5

FAQs

What type of backflow protection does this assembly provide?

This assembly is a double check valve backflow preventer designed to protect against backpressure and backsiphonage conditions for non-health hazard (pollutant) applications. It prevents non-potable water from entering the potable water system.

What is the significance of ArmorTek® coating?

ArmorTek® is a patented three-part advanced epoxy coating system applied to the internal and external surfaces. It is engineered to reduce microbial-induced corrosion (MIC), protect exposed metal surfaces, and reduce lead leach-in.

What are the shutoff valves included with this assembly?

This assembly comes with domestic non-rising stem (NRS) resilient wedge gate valves, compliant with AWWA C509 standards. These valves are designed to provide reliable shutoff capabilities.

What are the maximum operating pressure and temperature limits for this device?

The maximum working pressure for this backflow preventer is 175 psi (12.1 bar). It can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

Is this backflow preventer assembly easy to maintain?

Yes, it features an in-line serviceable and compact modular design, which facilitates easy maintenance and in-line repairs without requiring special tools.

Related Products

1 2