2 1/2 LF876V-OSY-GPM

Item Number: 0124471
1 1
$10,487.26
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 2 1/2 inch
  • Weight: 208.0 lb
  • Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek 3-part advanced epoxy system
  • Maximum Working Pressure: 175 psi
  • Lead Free: Wetted surfaces contain less than 0.25% lead by weight
  • Shutoff Valves: OS&Y resilient wedge gate valves
  • Bypass Assembly: GPM metered with 3/4 inch check
  • Installation: Horizontal N-Pattern and Vertical-Up Z-Pattern configurable

Description

The FEBCO 2 1/2 inch LF876V Double Check Detector Backflow Preventer Assembly is a lead-free device for fire protection systems. It prevents polluted water from entering potable water supplies due to backsiphonage or backpressure. Key features include a durable ductile iron body with ArmorTek advanced epoxy coating for corrosion resistance, OS&Y shutoff valves, and a GPM metered bypass for leak detection. The assembly supports both horizontal N-Pattern and vertical-up Z-Pattern installations, reducing footprint and costs. It is rated for a maximum working pressure of 175 psi and ensures compliance with essential water utility codes for non-health hazard applications.

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Installation & Connections

This 2 1/2 inch Double Check Detector Backflow Preventer Assembly is designed for installation on the potable water supply at cross-connection points, particularly for fire protection systems. It protects against backpressure and backsiphonage in non-health hazard (pollutant) applications. The assembly is compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards for end connections, supporting both horizontal (N-Pattern) and vertical-up (Z-Pattern) orientations.

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Additional Details

The FEBCO MasterSeries LF876V Double Check Detector Backflow Preventer Assembly is a 2 1/2 inch lead-free device designed to prevent the reverse flow of polluted water into potable water supplies due to backsiphonage or backpressure.

Primarily used on fire protection systems, this assembly detects system leakage or unauthorized water usage, offering both N (horizontal) and Z (vertical-up) pattern configurations for flexible installation.

Main Valve Features

  • In-line serviceable assembly for easy maintenance
  • Supports both Horizontal N-pattern and Vertical-Up Z-pattern installations
  • No special tools required for servicing of check modules
  • Features a captured modular spring assembly
  • Equipped with reversible and replaceable discs and field replaceable seats
  • Constructed with a ductile iron valve body design
  • Includes stainless steel check components
  • Utilizes ArmorTek coating technology to resist corrosion of internals, including microbial-induced corrosion (MIC) and exposed metal substrate corrosion
  • Winterization feature with disc retainers and valve body drain ports
  • Clapper check assembly with commonality between 1st and 2nd check components
  • 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
  • No special tools required for servicing
  • Features field replaceable seat and disc
  • Designed to detect potential underground water leaks
  • Capable of detecting unauthorized water usage

Specifications

  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Size: 2 1/2 inch
  • Design: Configurable N-Pattern and Z-Pattern
  • Lead Free: Yes (Wetted surface contains less than 0.25% lead by weight)

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating (3-part advanced epoxy system)
  • Shutoff Valves: OS&Y 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

Performance 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 to 140°F (0.5°C to 60°C) continuous

Bypass Assembly

  • Bypass Type: Gallons per minute metered
  • Bypass Check Assembly: 3/4 inch in-line serviceable

Certificates & Approvals

  • Approved by: Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
  • Listing: ASSE 1048
  • Classification: UL Classified (U.S. & Canada)
  • Approval: FM Approved
  • Certification: IAPMO/CUPC
  • Standard Compliance: AWWA Standard C510
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • Certified: UPC
  • Certified: CSA B64.5

FAQs

What is the primary purpose of this backflow preventer?

This assembly is designed to prevent the reverse flow of polluted water from entering potable water supplies due to backsiphonage or backpressure, primarily for non-health hazard applications in fire protection systems.

What is the coating technology used on this backflow preventer?

It features ArmorTek, a patented three-part advanced epoxy coating system. This coating is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates.

Can this backflow preventer be installed in different orientations?

Yes, its configurable design supports both horizontal (N-pattern) and vertical-up (Z-pattern) installations. This flexibility helps reduce installation footprint and costs.

What is the maximum operating pressure for this assembly?

The maximum working pressure for this 2 1/2 inch backflow preventer assembly is 175 psi (12.1 bar).

Does this assembly include a bypass for leak detection?

Yes, it includes a compact auxiliary bypass assembly with a 5/8"x3/4" water meter (GPM meter). This bypass is designed to detect potential underground water leaks or unauthorized water usage.

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