6 LF870-W-DNRS

Item Number: 88005415
1 1
$13,581.75
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 6 inch
  • Weight: 670.0 lb
  • Lead Free* construction for potable water systems
  • ArmorTek® coating for corrosion protection
  • Ductile iron body with domestic NRS shutoff valves
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Drop-in replacement for N-pattern valves
  • In-line serviceable with no special tools for checks

Description

The 6-inch FEBCO MasterSeries LF870W/WZ Double Check Valve Backflow Preventer Assembly with Domestic NRS Shutoffs is engineered to protect potable water systems from non-health hazard backpressure and backsiphonage. Its lead-free construction meets low lead requirements, while ArmorTek® coating on ductile iron components resists microbial-induced corrosion. Designed for drop-in replacement of competitor N-pattern valves, this assembly features a compact, modular design for easy in-line maintenance without special tools. It is approved for both horizontal and vertical-up N-pattern installations, ensuring reliable performance in continuous pressure applications. Item number 88005415.

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Connection and Orientation

  • This 6 inch LF870W Double Check Valve Assembly is designed for N-pattern installations, allowing for both horizontal and vertical-up orientations.
  • Its longer gate-to-gate length is specifically engineered to provide a direct drop-in replacement for longer competitor valves in the N-pattern orientation, simplifying installation.
  • The assembly is intended for installation on the potable water supply at points of cross-connection where protection against non-health hazard (pollutant) backflow is required.
  • The inlet and outlet 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® double check valve backflow preventer assembly with domestic NRS shutoffs is designed to provide drop-in replacement for competitor's N-pattern valves, preventing the backflow of polluted water into the potable water supply due to backsiphonage or backpressure. It is suitable for non-health hazard (pollutant) applications in continuous pressure piping systems, adhering to national plumbing codes and water authority requirements.

Key Features

  • Features a longer gate-to-gate length for easy drop-in replacement of existing longer valves.
  • ArmorTek® coating technology, a patented three-part advanced epoxy system, protects ductile iron components against microbial-induced corrosion (MIC) and exposed metal substrate.
  • Designed for in-line servicing, allowing for easy maintenance without removing the entire assembly.
  • The assembly is Lead Free*, complying with low lead installation requirements (wetted surface contains less than 0.25% lead by weight).
  • Incorporates a compact modular design with two in-line independent positive seating check modules.
  • No special tools are required for servicing the check modules, which are accessed through independent top entry covers.
  • Includes replaceable seats and discs for extended service life.
  • Features a clapper check assembly and captured springs for reliable performance.
  • Approved for horizontal and vertical-up N-pattern installations.

Construction Details

  • Main valve body is constructed from fused epoxy ductile iron Grade 65-45-12.
  • Includes domestic NRS (Non-Rising Stem) resilient seated gate valves.
  • Stainless steel check components, disc holders, and springs ensure durability.
  • Silicone elastomer discs provide effective sealing.
  • Equipped with top-mounted test cocks as specified by AWWA Standard C510.

Specifications

  • Size: 6 inch
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek Powder Coating (internal and external surfaces)
  • Shutoff Valves: Domestic NRS Resilient Wedge Gate Valve AWWA C509
  • Check Seats: Stainless Steel
  • Disc Holder: Stainless Steel
  • Elastomer Disc: Silicone
  • Spring: Stainless Steel
  • Clamp: AWWA C606

Pressure & Temperature

  • 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
  • IAPMO
  • AWWA Standard C510 Compliant
  • NSF Certified to NSF/ANSI 61-G
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary use of this 6 inch backflow preventer assembly?

This assembly is primarily used on potable drinking water systems to protect against possible backpressure and backsiphonage conditions for non-health hazard (pollutant) applications, in accordance with local governing water utility codes.

What does 'Lead Free' mean for this product?

Lead Free means that the wetted surface of this product, when contacted by consumable water, contains less than 0.25% of lead by weight. This complies with low lead installation requirements for potable water systems.

How does the ArmorTek® coating benefit this backflow preventer?

The ArmorTek® coating is a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate. This enhances the durability and longevity of the ductile iron components.

Is this assembly difficult to service or maintain?

No, this assembly is designed for in-line servicing and features a compact modular design. Servicing both check modules does not require any special tools and can be accessed through independent top entry covers.

What kind of shutoff valves are included with this assembly?

This 6 inch assembly comes with domestic NRS (Non-Rising Stem) resilient seated gate valves, which comply with AWWA Standard C509.

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