6 LF856-OSY-GPM

Item Number: 0124447
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$16,765.59
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 6 inch
  • Weight: 502.0 lb
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek advanced epoxy system
  • Max. Working Pressure: 175 psi
  • Min. Working Pressure: 10 psi
  • Temperature Range: 33°F - 140°F
  • Features GPM metered bypass
  • Lead Free: Less than 0.25% lead by weight

Description

The 6 inch FEBCO MasterSeries LF856 Double Check Detector Backflow Preventer Assembly provides reliable protection against backflow of pollutants in non-health hazard applications. Ideal for fire sprinkler and standpipe systems, this lead-free assembly features a durable ductile iron body with ArmorTek® epoxy coating for corrosion resistance. It includes OS&Y gate valves, two independent check valves with replaceable stainless steel seats, and a GPM metered bypass for detecting unauthorized water use. With a maximum working pressure of 175 psi, it meets AWWA C510, UL, and FM standards. Item number 0124447.
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Additional Details

This 6 inch lead free MasterSeries® Double Check Detector Backflow Preventer Assembly prevents the backflow of pollutants into the potable water supply. It is designed for non-health hazard, non-potable service applications such as irrigation, fire line, or industrial processing, and is primarily used on fire sprinkler and standpipe systems requiring detection of unauthorized water use.

The iron components are coated with ArmorTek®, a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.

Main Valve Features

  • In-line serviceable assembly
  • 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

Auxiliary Bypass Features

  • Compact bypass design; remains in main valve assembly profile
  • In-line serviceable ¾ inch check assembly
  • No special tools required for servicing
  • Field replaceable seat and disc
  • Detect potential underground water leaks
  • Detect unauthorized water usage

Specifications

  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Nominal Size: 6 inch
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek powder coating
  • Shutoff Valves: OS&Y resilient wedge gate valves AWWA C515 (UL Classified/FM Approved)
  • Check Seats Material: Stainless steel
  • Disc Holder Material: Stainless steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless steel
  • Clamp Material: AWWA C606 (10 inch only)

Performance

  • 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
  • Lead Content: Less than 0.25% by weight of wetted surface

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
  • AWWA Standard C510 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange

FAQs

What is the primary application of the FEBCO LF856 Double Check Detector Assembly?

This assembly is primarily used to protect drinking water supplies from non-health hazard cross-connections, such as those found in irrigation, fire line, or industrial processing systems. It's especially suited for fire sprinkler and standpipe systems that require detection of unauthorized water usage.

What does the ArmorTek® coating technology provide?

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

What is the maximum operating pressure for this 6 inch backflow preventer?

The maximum working pressure for the 6 inch FEBCO MasterSeries LF856 Double Check Detector Assembly is 175 psi (12.1 bar).

Are special tools required to service the main valve or auxiliary bypass?

No, both the main valve and the auxiliary bypass check assembly are designed for in-line serviceability without the need for special tools.

What type of shutoff valves are included with this assembly?

This assembly is fitted with UL Classified/FM Approved outside stem and yoke (OS&Y) resilient seated gate valves that comply with AWWA C515.

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