4 LF870-WZ-LG

Item Number: 88007320
1 1
$5,802.75
Special Order
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: 225.0 lb
  • Size: 4 inch
  • Design: Z-Pattern, Less Shutoff Valves
  • Body Material: Ductile Iron with ArmorTek Coating
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Lead Free Construction
  • Drop-in replacement for competitor Z-pattern valves

Description

The FEBCO MasterSeries LF870-WZ-LG is a 4 inch lead-free double check valve backflow preventer assembly. It is specifically designed to protect potable water systems from non-health hazard pollutants due to backsiphonage and backpressure. This Z-pattern model offers a longer lay-length for direct drop-in replacement of competitor valves. Constructed with a durable ductile iron body and ArmorTek powder coating for corrosion resistance, it features stainless steel check components and replaceable seats. Approved by FCCCHR-USC, ASSE 1015, UL, FM, IAPMO, AWWA C510, and NSF/ANSI 61-G, it operates up to 175 psi from 33°F to 140°F.

Help Me Connect

This FEBCO MasterSeries® double check valve assembly is designed for drop-in replacement of a competitor's valves in the Z-pattern (LF870WZ) orientation. The assembly features flanged end connections and is compatible with ASME B16.1 Class 125 & AWWA Class D Flange standards. It is installed on the potable water supply at cross-connection points.

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Additional Details

This 4 inch lead free FEBCO MasterSeries® double check valve backflow preventer assembly (LF870-WZ-LG) is designed to protect potable water systems from non-health hazard (pollutant) backflow due to backsiphonage and backpressure.

It provides a drop-in replacement for competitor Z-pattern valves, featuring a longer lay-length. The assembly comes without shutoff valves.

Features

  • Longer gate-to-gate length for drop-in replacement of longer valves
  • In-line serviceable assembly
  • Vertical up Z-pattern installations
  • No special tools required for servicing
  • Captured modular spring assembly
  • Reversible 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 ports
  • Clapper check assembly
  • Commonality between 1st and 2nd check components
  • Captured O-ring design

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating, applied to internal and external surfaces
  • Check Seats: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring: Stainless steel
  • Clamp: AWWA C606

The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Specifications

  • Valve Type: Double Check Valve Assembly
  • Model: LF870-WZ-LG (Z-Pattern, Less Shutoff Valves)
  • Size: 4 inch
  • Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating
  • Check Seat Material: Stainless steel
  • Disc Holder Material: Stainless steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless steel
  • Clamp Material: AWWA C606

Performance

  • Max. Working Pressure: 175 psi (12.1 bar)
  • Min. 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
  • 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 this backflow preventer?

This backflow preventer is designed to protect potable drinking water systems from non-health hazard (pollutant) contamination caused by backsiphonage and backpressure, in accordance with local governing water utility codes.

What is the "Z-pattern" design and why is it significant?

The Z-pattern design refers to the valve's configuration, allowing for vertical up installation. This specific LF870-WZ-LG model features a longer lay-length for direct drop-in replacement of existing competitor Z-pattern valves.

Is this product suitable for health hazard applications?

No, this double check valve assembly is specifically designed for non-health hazard (pollutant) applications. It protects against objectionable but non-toxic substances.

What materials are used in the construction of this valve?

The main valve body is ductile iron with ArmorTek powder coating. Internal components include stainless steel check seats, stainless steel disc holders, silicone elastomer discs, and stainless steel springs.

What are the key approvals and certifications for this assembly?

This assembly is approved by FCCCHR-USC, ASSE 1015, UL Classified (U.S. & Canada), FM Approved, IAPMO, AWWA Standard C510 Compliant, and NSF Certified to NSF/ANSI 61-G for lead-free construction.

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