4 LF876V-OSY-GPM

Item Number: 0124477
1 1
$12,387.38
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
  • Lead-Free: Wetted surface < 0.25% lead
  • Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek® advanced epoxy system
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F to 140°F
  • Configurable N-Pattern and Z-Pattern installation
  • 3/4 inch bypass with GPM water meter

Description

The FEBCO MasterSeries LF876V is a 4 inch lead-free double check detector backflow preventer assembly designed for fire protection systems. It prevents backpressure and backsiphonage of polluted water into potable water supplies. Featuring a ductile iron body with ArmorTek® advanced epoxy coating, it offers superior corrosion resistance. This assembly includes a 3/4 inch bypass with a GPM water meter for leak detection and monitoring unauthorized water use. It supports both horizontal N-Pattern and vertical-up Z-Pattern installations and is approved by ASSE 1048, UL, and FM. Maximum working pressure is 175 psi. Item 0124477.

Help Me Connect

Installation & Configuration

  • This assembly can be installed in either a horizontal (N-Pattern) or vertical-up (Z-Pattern) orientation.
  • The end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards, ensuring compatibility with standard flanged pipe connections.
  • The integrated 3/4 inch bypass line with a 5/8"x3/4" water meter helps detect system leaks and unauthorized water usage, making it ideal for fire protection systems.
View full details

Additional Details

The 4 inch MasterSeries® LF876V Double Check Detector Backflow Preventer Assembly is designed to prevent reverse flow of polluted water into potable water supplies due to backsiphonage or backpressure. This lead-free assembly is primarily used on fire protection systems to detect system leakage or unauthorized water use, helping to reduce installation costs with its configurable N and Z (Vertical-Up) patterns.

Construction & Coating

  • Features a ductile iron valve body design for durability.
  • Coated with ArmorTek®, a patented three-part advanced epoxy system, to resist microbial-induced corrosion (MIC) and protect exposed metal surfaces.
  • Lead-free construction ensures the wetted surface contains less than 0.25% lead by weight.

Main Valve Features

  • In-line serviceable design, requiring no special tools for servicing.
  • Capable of both horizontal N-pattern and vertical-up Z-pattern installations.
  • Equipped with two independent clapper style check modules with replaceable seats and discs.
  • Features stainless steel check components and a captured modular spring assembly.
  • Includes a winterization feature with disc retainers and valve body drain ports.
  • Commonality between 1st and 2nd check components with a captured O-ring design.

Auxiliary Bypass Features

  • Compact bypass design that remains within the main valve assembly profile.
  • In-line serviceable 3/4 inch check assembly with a 5/8"x3/4" water meter (GPM).
  • Designed to detect potential underground water leaks and unauthorized water usage.
  • Field replaceable seat and disc.

Specifications

General

  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Model: MasterSeries LF876V
  • Size: 4 inch
  • Configuration: N-Pattern (Standard), Z-Pattern (Vertical-Up)
  • Bypass: 3/4 inch with 5/8"x3/4" GPM Water Meter
  • Lead Content: Wetted surface contains less than 0.25% lead by weight

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating, applied to internal and external surfaces
  • Shutoff Valves: OSY resilient wedge gate valve AWWA C515 (UL/FM)
  • 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 to 140°F (0.5°C to 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
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • CSA B64.5

FAQs

What is the primary purpose of the FEBCO MasterSeries LF876V backflow preventer?

Its primary purpose is to protect potable water supplies from pollution caused by backpressure or backsiphonage, particularly in fire protection systems. It also detects system leakage and unauthorized water use.

What is ArmorTek® coating and what are its benefits?

ArmorTek® is a patented three-part advanced epoxy system that coats the iron components. It's engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing the durability and lifespan of the assembly.

Can this backflow preventer be installed in different orientations?

Yes, the FEBCO MasterSeries LF876V is designed for configurable installation in both horizontal (N-Pattern) and vertical-up (Z-Pattern) orientations, offering flexibility and helping to reduce installation costs.

What is the maximum operating pressure and temperature range for this assembly?

The maximum working pressure is 175 psi (12.1 bar). It operates continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

How does the auxiliary bypass assembly function?

The compact 3/4 inch auxiliary bypass assembly features a 5/8"x3/4" water meter (GPM). It is designed to detect potential underground water leaks and unauthorized water usage in the system without compromising backflow prevention.

Related Products