4 LF876-WZ-DOSY-GPM

Item Number: 88007350
1 1
$12,387.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 4 inch
  • Weight: 450.0 lb
  • Max Working Pressure: 175 PSI
  • Lead Free: Less than 0.25% lead by weight
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek 3-part advanced epoxy
  • Configuration: Z-Pattern (Vertical Up)
  • Bypass Meter: Gallons per Minute (GPM)
  • Shutoff Valves: OSY Resilient Wedge Gate Valves

Description

The 4-inch FEBCO MasterSeries LF876W/WZ Double Check Detector Assembly provides reliable protection against backpressure and backsiphonage in non-health hazard applications. Featuring a durable ductile iron body with ArmorTek advanced epoxy coating for superior corrosion resistance, this assembly is lead-free. It includes OSY shutoff valves, a GPM metered bypass to detect leaks, and two independent check valves. Designed for Z-Pattern (vertical up) installation, it serves as a direct drop-in replacement for competitor valves in potable water and fire sprinkler systems. Maximum working pressure is 175 PSI. Item number 88007350.

Help Me Connect

The FEBCO MasterSeries LF876W/WZ Double Check Detector Assembly is designed for Z-Pattern (vertical up) installation and provides a direct drop-in replacement for competitor's Z-pattern backflow preventer valves.

Its end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards, ensuring compatibility with standard flanged piping systems.

  • This assembly connects to a 4-inch main line.
  • It features OSY resilient seated domestic gate valves for shutoff.
  • The integral bypass line includes a 5/8" x 3/4" water meter for monitoring.
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Additional Details

The 4 inch FEBCO MasterSeries LF876W/WZ Double Check Detector Assembly (Type II) is designed to prevent the reverse flow of polluted water into the potable water supply due to backsiphonage or backpressure. This assembly is primarily used on potable drinking water systems and fire sprinkler systems for non-health hazard (pollutant) applications.

This valve features a Z-Pattern lay-length specifically for drop-in replacement of competitor’s Z-pattern valves. Its bypass line is designed to detect system leakage or unauthorized water use.

Features

  • Ductile iron body construction with patented ArmorTek® 3-part advanced epoxy coating system to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Contains two in-line independent check valves with replaceable seats and disc rubbers.
  • Includes a gallons per minute (GPM) metered bypass and outside stem and yoke (OSY) resilient seated domestic gate valves.
  • Designed for Z-Pattern (vertical up) installations to protect against backpressure and backsiphonage.
  • Incorporates ball valve test cocks for easy testing.
  • Lead Free* design, containing less than 0.25% lead by weight on wetted surfaces.

Specifications

  • Size: 4 inch
  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Configuration: Z-Pattern
  • Bypass Meter: 5/8 inch x 3/4 inch Water Meter, Gallons per Minute (GPM)
  • Main Valve Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek powder coating (internal and external surfaces)
  • Shutoff Valves: OSY Resilient Wedge Gate Valve
  • Check Seats: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring Material: 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 1048 Listed
  • UL Classified (U.S. & Canada)
  • FM Approved
  • IAPMO/CUPC
  • AWWA Standard C510 Compliant
  • CSA B64.5
  • 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 FEBCO MasterSeries LF876W/WZ assembly prevents reverse flow of polluted water into the potable water supply caused by backsiphonage or backpressure, specifically for non-health hazard applications.

What kind of water systems is this assembly suitable for?

This backflow preventer is primarily used on potable drinking water systems and fire sprinkler systems where local codes mandate protection from non-potable quality water.

What material is the body made from, and what is ArmorTek coating?

The main valve body is constructed from Ductile Iron Grade 65-45-12. ArmorTek is a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal surfaces.

Does this assembly detect water leaks or unauthorized usage?

Yes, the auxiliary bypass line includes a 5/8 inch x 3/4 inch GPM water meter designed to detect potential underground water leaks or unauthorized water usage within the system.

What is the maximum working pressure and temperature range for this backflow preventer?

The maximum working pressure is 175 PSI (12.1 bar). The continuous operating temperature range is 33°F to 140°F (0.5°C to 60°C).

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