4 LF876-WZ-LG-GPM

Item Number: 88007348
1 1
$7,747.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 4 inch
  • Weight: 255.0 lb
  • Max. Working Pressure: 175 psi
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek powder coating
  • Lay Length: Z-Pattern Competitor Drop-in
  • Bypass Meter: GPM Metered
  • Approved: ASSE 1048, UL Classified, FM Approved
  • Temperature Range: 33°F – 140°F

Description

This 4 inch MasterSeries® Double Check Detector Backflow Preventer Assembly is designed to protect potable water supplies from pollution in fire protection systems. It features a durable ductile iron body with an ArmorTek powder coating for superior internal and external corrosion resistance. The Z-Pattern lay length allows for direct competitor replacement, simplifying installation. It includes a GPM metered bypass to detect system leaks and unauthorized water usage. This assembly is UL Classified, FM Approved, and ASSE 1048 Listed, ensuring reliable performance up to 175 psi for continuous operation between 33°F and 140°F.

Help Me Connect

Lay Length & Connections

  • This assembly features a Z-Pattern lay-length, specifically designed for drop-in replacement of competitor Z-pattern valves.
  • The end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
View full details

Additional Details

This 4 inch lead free MasterSeries® Double Check Detector Backflow Preventer Assembly is designed to prevent the reverse flow of polluted water into the potable supply due to backsiphonage or backpressure. It is specifically engineered for installation on fire protection systems, providing indications of system leakage or unauthorized water use. This model features a longer Z-Pattern lay-length for direct drop-in replacement of competitor valves.

Main Valve Features

  • Field serviceable assembly with no special tools required
  • Captured modular spring assembly
  • Reversible and replaceable discs
  • Field replaceable seats
  • ArmorTek coating technology to resist corrosion of internals
  • Virtualization feature with disc retainers and valve body
  • Z-Pattern for compact assembly and reduced installation footprint
  • Clapper check assembly
  • Compact assembly between 1st and 2nd check components
  • Captured 3-part design

Auxiliary Bypass Features

  • Compact design; remains in main valve assembly profile
  • In-line serviceable ¾” check assembly
  • Field replaceable seat and disc
  • Detects potential underground water leaks
  • Detects unauthorized water usage

Specifications

General

  • Size: 4 inch
  • Model: LF876WZ
  • Lay Length: Z-Pattern Competitor Drop-in
  • Shutoff Valves: Less Shutoff Valves
  • Meter Type: GPM Meter
  • Assembly Orientation: Z-Pattern
  • Coating: ArmorTek Powder Coating

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

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 Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
  • ASSE 1048 Listed
  • UL Classified (U.S. & Canada)
  • FM Approved
  • IAPMO/CUPC
  • AWWA Standard C510 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary function of this backflow preventer?

This 4 inch MasterSeries® Double Check Detector Backflow Preventer Assembly is designed to prevent the reverse flow of polluted water into the potable water supply due to backsiphonage or backpressure, primarily for fire protection systems.

What kind of coating is applied to the valve body?

The main valve body features an ArmorTek powder coating, which is a patented three-part advanced epoxy system applied to both internal and external surfaces for superior corrosion resistance, including protection against microbial induced corrosion (MIC).

Does this assembly include shutoff valves?

No, this specific model (LF876-WZ-LG-GPM) is configured "Less Shutoff Valves". OS&Y resilient wedge gate valves are available as options for other models.

What is the purpose of the GPM bypass meter?

The bypass includes a Gallons Per Minute (GPM) meter designed to detect potential underground water leaks or unauthorized water usage within the fire protection system, providing essential monitoring capabilities.

What are the key certifications and approvals for this product?

This backflow preventer is ASSE 1048 Listed, UL Classified (U.S. & Canada), FM Approved, IAPMO/CUPC, and compliant with AWWA Standard C510, among others.

Related Products