6 LF870-WZ-DNRS

Item Number: 88007321
1 1
$13,581.75
Special Order
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
  • Main Valve Body: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek Fused Epoxy Powder Coating
  • Shutoff Valves: Domestic NRS Resilient Wedge Gate Valves
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Approvals: ASSE 1015, UL, FM, IAPMO, AWWA C510, NSF/ANSI 61-G
  • Design: Z-Pattern lay length for competitor replacement

Description

The 6 inch FEBCO LF870-WZ Double Check Valve Backflow Preventer Assembly is designed to prevent polluted water from entering potable water supplies due to backsiphonage or backpressure. This lead-free valve is engineered for drop-in replacement of competitor Z-pattern valves with an extended lay length, shipping in an N-pattern (horizontal) orientation. Constructed with a durable ductile iron body featuring ArmorTek fused epoxy coating, it includes stainless steel check modules and domestic NRS shutoff valves. Rated for a maximum working pressure of 175 psi and temperatures from 33°F to 140°F, it is ASSE 1015, UL Classified, FM Approved, IAPMO, AWWA C510, and NSF/ANSI 61-G compliant for reliable performance in non-health hazard applications.

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Compatibility & Installation

This FEBCO LF870-WZ Double Check Valve Assembly is specifically engineered to serve as a drop-in replacement for competitor's Z-pattern valves, featuring an extended lay length. While designed for Z-pattern lay length compatibility, the assembly ships in the standard N-pattern (horizontal) orientation. It can be installed in continuous pressure piping applications. End connections are compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.

The modular design of this assembly allows for easy in-line serviceability, making maintenance straightforward without requiring special tools.

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Additional Details

This 6 inch lead free MasterSeries® double check valve backflow preventer assembly is engineered to provide drop-in replacement of competitor's valves with a Z-pattern (LF870WZ) lay length, while configured for standard N-pattern (LF870W) orientation. It 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. This valve is suitable for continuous pressure piping applications and for cross-connections identified as non-health hazards.

Key Features

  • Designed for drop-in replacement of competitor's Z-pattern valves, featuring a longer gate-to-gate length.
  • Constructed with a ductile iron body, epoxy coated using ArmorTek corrosion resistant technology for internal and external surfaces.
  • Features stainless steel check modules with replaceable seats and disc rubbers.
  • Equipped with domestic NRS resilient seated gate valves.
  • Compact modular design facilitates easy in-line maintenance.
  • No special tools required for servicing.
  • Includes a captured modular spring assembly, reversible and replaceable discs, and field replaceable seats.
  • Winterization feature with disc retainers and valve body drain ports.
  • Clapper check assembly ensures compatibility between 1st and 2nd check components.
  • Features a captured O-ring design.

Specifications

    General

  • Product Type: Double Check Valve Backflow Preventer Assembly
  • Size: 6 inch
  • Orientation: N-Pattern (Standard, Horizontal), designed for Z-Pattern (Vertical) lay length replacement
  • SKU: 88007321

    • Materials

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

    • Pressure & 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 FCCCHR-USC (Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California)
  • 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 is the primary purpose of the FEBCO LF870-WZ Double Check Valve Assembly?

Its primary purpose is to prevent the backflow of polluted water from entering potable water supply lines due to backsiphonage or backpressure, as required by plumbing codes and water authority regulations.

What kind of valves does this assembly replace?

This assembly is specifically designed as a drop-in replacement for competitor's Z-pattern (vertical orientation) backflow preventer valves, featuring an extended lay length.

What are the main materials used in this backflow preventer?

The main valve body is ductile iron Grade 65-45-12 with ArmorTek fused epoxy coating. It features stainless steel check seats, disc holders, and springs, with silicone elastomer discs and domestic NRS resilient wedge gate shutoff valves.

What are the pressure and temperature limits for this device?

The assembly has a maximum working pressure of 175 psi (12.1 bar), a minimum working pressure of 10 psi (0.7 bar), and operates continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

What certifications and approvals does this backflow preventer hold?

It is ASSE 1015 Listed, UL Classified (U.S. & Canada), FM Approved, IAPMO certified, AWWA Standard C510 Compliant, and NSF/ANSI 61-G Certified. It is also approved by FCCCHR-USC.

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