8 LF870W-DNRS

Item Number: 88005420
1 1
$26,833.50
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 8 inch
  • Weight: 1096.0 lb
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek® 3-part advanced epoxy for corrosion protection
  • Shutoff Valves: Domestic Non-Rising Stem (NRS) Gate
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F – 140°F (continuous)
  • Approved: ASSE 1015, UL Classified, FM Approved
  • Modular design for easy in-line maintenance

Description

This 8-inch lead-free MasterSeries® double check valve backflow preventer assembly (LF870W-DNRS) is designed for non-health hazard applications, preventing the backflow of polluted water into potable water supplies. It features a durable ductile iron body with ArmorTek® advanced epoxy coating for superior corrosion resistance against microbial-induced corrosion. The N-pattern assembly includes domestic non-rising stem (NRS) gate valves and offers a compact, modular design for easy in-line maintenance. It is ASSE 1015 listed, UL Classified, and FM Approved for reliable performance in continuous pressure piping.

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Connection and Installation

  • The assembly's end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
  • This backflow preventer is designed for N-Pattern vertical installation, where the inlet flow is vertical up and the outlet flow is vertical down.
  • The domestic non-rising stem (NRS) resilient seated gate valves are AWWA C509 Standard compliant.
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Additional Details

This 8 inch lead free MasterSeries® configurable double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply. 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.

Design and Construction

  • Features a durable fused epoxy ductile iron body with a patented ArmorTek® 3-part advanced epoxy coating system to limit both microbial induced (MIC) and exposed metal substrate corrosion.
  • Includes domestic non-rising stem (NRS) resilient seated gate valves.
  • Equipped with two in-line independent positive seating check modules, captured springs, and replaceable check discs and seats.
  • Offers a compact modular design that facilitates easy in-line maintenance.
  • Designed for vertical installation (inlet flow vertical up and outlet flow vertical down).
  • Features top mounted test cocks for easy testing.
  • No special tools required for servicing, enabling quicker and simpler repairs.

Specifications

  • Size: 8 inch
  • Model: LF870W (N-Pattern)
  • Main Valve Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek® 3-part advanced epoxy (for microbial induced (MIC) and metal substrate corrosion protection)
  • Shutoff Valves: Domestic Non-Rising Stem (NRS) Resilient Seated Gate Valves (AWWA C509 Standard)
  • Check Seats: Stainless Steel
  • Disc Holder: Stainless Steel
  • Elastomer Disc: Silicone
  • Spring Material: Stainless Steel
  • Clamp Material: AWWA C606

Pressure and Temperature Ratings

  • Min. Working Pressure: 10 psi (0.7 bar)
  • Max. Working Pressure: 175 psi (12.1 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
  • AWWA Standard C510 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • NRS Shutoff Valves: ANSI/AWWA C509 Compliant

FAQs

What is the primary purpose of this 8-inch LF870W-DNRS backflow preventer?

The primary purpose is to prevent the backflow of polluted, non-health hazard water from entering the potable water supply due to backsiphonage or backpressure. It's suitable for continuous pressure piping applications.

What does the ArmorTek® coating do?

The ArmorTek® coating is a patented 3-part advanced epoxy system applied to the ductile iron body. It is designed to limit both microbial induced (MIC) and exposed metal substrate corrosion, enhancing the assembly's durability and lifespan.

What type of shutoff valves are included with this assembly?

This assembly includes domestic non-rising stem (NRS) resilient seated gate valves, which are compliant with AWWA C509 Standard.

What are the installation requirements for the "N-Pattern" configuration?

The N-Pattern configuration (LF870W) requires vertical installation, meaning the inlet flow should be vertical up and the outlet flow should be vertical down.

What are the maximum operating pressure and temperature for this backflow preventer?

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 – 140°F (0.5°C – 60°C).

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