4 LF870-WZ-DNRS

Item Number: 88007318
1 1
$8,694.75
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Valve Type: Double Check Valve Assembly
  • Weight: 425.0 lb
  • Size: 4 inch
  • Orientation: Z-Pattern (LF870WZ)
  • Lead Free: Yes (<0.25% lead by weight)
  • Body Material: Ductile Iron with ArmorTek Coating
  • Shutoff Valves: Domestic NRS Resilient Seated Gate
  • Max Working Pressure: 175 psi
  • Approvals: ASSE 1015, UL, FM, IAPMO, NSF 61-G

Description

The FEBCO 4 inch LF870W/WZ Double Check Valve Assembly is engineered to prevent polluted water from entering potable water systems due to backsiphonage or backpressure. This lead-free model is ideal for non-health hazard applications and features a Z-pattern lay length for direct drop-in replacement of competitor valves. Constructed with a ductile iron body and ArmorTek coating, it offers superior corrosion resistance. It includes domestic NRS shutoff valves and in-line serviceable clapper checks for easy maintenance. Approved by ASSE 1015, UL, FM, IAPMO, and NSF 61-G, this assembly ensures reliable protection for continuous pressure piping. Item number 88007318.

Help Me Connect

This FEBCO MasterSeries LF870W/WZ Double Check Valve Assembly is designed for versatility and ease of installation.

  • Orientation: Designed to provide drop-in replacement for competitor's valves in both N-pattern (horizontal) and Z-pattern (vertical up) orientations. This specific model is ideal for Z-pattern lay length.
  • Connections: Intended for installation on the potable water supply at points of cross-connection.
  • Compatibility: Protects against backpressure and backsiphonage in non-health hazard (pollutant) applications. End connections are compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 4 inch lead free MasterSeries LF870W/WZ Double Check Valve Assembly is designed to prevent the backflow of polluted water from entering the potable water supply due to backsiphonage or backpressure.

It is specifically engineered for non-health hazard (pollutant) applications in accordance with local governing water utility codes, making it ideal for continuous pressure piping systems and cross-connections identified as non-health hazards.

Features & Benefits

  • Designed for drop-in replacement of competitor's valves in both N-pattern and Z-pattern orientations, featuring a longer gate-to-gate length.
  • In-line serviceable assembly with a compact modular design, requiring no special tools for servicing.
  • Suitable for vertical up/vertical down N-pattern and vertical up Z-pattern installations.
  • Features an ArmorTek® coating technology on iron components to resist microbial-induced corrosion (MIC) and electrochemical corrosion.
  • Equipped with two independent positive seating clapper check modules, captured modular spring assembly, reversible and replaceable discs, and field replaceable seats.
  • Includes domestic NRS (Non-Rising Stem) resilient seated gate valves.
  • Winterization features include disc retainers and valve body drain ports.
  • Lead Free* construction ensures compliance with low lead installation requirements.
*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Specifications

General

  • Valve Type: Double Check Valve Assembly
  • Size: 4 inch
  • Orientation: Z-Pattern (LF870WZ)
  • Application: Non-Health Hazard (Pollutant)
  • Body Design: Ductile Iron Valve Body

Materials

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

Performance

  • 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 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
  • NSF Certified to NSF/ANSI 61-G

FAQs

What does "Lead Free" mean for this backflow preventer?

The term "Lead Free" for this product means that the wetted surface of the assembly, which comes into contact with consumable water, contains less than 0.25% lead by weight. This ensures compliance with low lead installation requirements.

Can this valve assembly be installed in either N-pattern or Z-pattern orientations?

Yes, the FEBCO MasterSeries LF870W/WZ is specifically designed for drop-in replacement of competitor's valves in both N-pattern (horizontal) and Z-pattern (vertical up) orientations. This specific model is tailored for Z-pattern lay lengths.

What type of backflow conditions does this assembly protect against?

This double check valve assembly protects against possible backpressure and backsiphonage conditions. It is intended for non-health hazard (pollutant) applications on potable drinking water systems.

What are the shutoff valves made of and what type are they?

The shutoff valves are domestic NRS (Non-Rising Stem) resilient seated gate valves, compliant with AWWA C509 standards.

How does the ArmorTek coating benefit the valve assembly?

The ArmorTek coating is a patented three-part advanced epoxy system applied to the iron components. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal surfaces, ensuring enhanced durability and longevity of the backflow preventer.

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