2 1/2 LF850-DNRS DC

Item Number: 0683080
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$6,686.93
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • 2 1/2 inch Lead Free Double Check Valve Backflow Preventer
  • Weight: 260.0 lb
  • Non-health hazard (pollutant) application
  • Main Valve Body: Ductile Iron Grade 65-45-12
  • ArmorTek® epoxy coating for corrosion resistance
  • Shutoff Valves: Non-Rising Stem (NRS) AWWA C509
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • ASSE 1015, UL Classified, FM Approved, IAPMO, CSA Listed

Description

The FEBCO 2 1/2 inch MasterSeries LF850 is a lead free double check valve backflow preventer assembly, designed to protect potable water systems from non-health hazard pollutants due to backpressure or backsiphonage. Featuring a durable ductile iron body with ArmorTek® advanced epoxy coating for corrosion resistance and non-rising stem (NRS) shutoff valves, it ensures reliable performance and easy in-line maintenance. This assembly is ASSE 1015, UL, FM, and IAPMO approved, meeting AWWA C510 standards for superior backflow prevention in continuous pressure applications. Item number 0683080.

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Installation & Connections

This 2 1/2 inch FEBCO MasterSeries LF850 Double Check Valve Assembly is designed for installation on potable water supply lines at cross-connection points where backflow protection is required for non-health hazard (pollutant) applications. It is suitable for both horizontal and vertical-up flow orientations. The assembly is fitted with AWWA Compliant inlet/outlet resilient seated shutoff valves (NRS in this configuration) and features flanged end connections compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards, facilitating connection to compatible piping systems.

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Additional Details

The FEBCO MasterSeries LF850 2 1/2 inch lead free double check valve backflow preventer assembly is designed to protect potable water supplies from pollution caused by backpressure or backsiphonage in non-health hazard applications. It is ideal for continuous pressure piping systems and cross-connections with non-toxic contaminants.

This assembly ensures compliance with national plumbing codes and water authority requirements, featuring a compact, modular design for easy in-line maintenance.

Key Features

  • Lead free construction, with wetted surfaces containing less than 0.25% lead by weight, complies with low lead installation requirements.
  • ArmorTek® patented three-part advanced epoxy coating system applied to internal and external surfaces for superior protection against microbial-induced corrosion (MIC) and general metal substrate corrosion.
  • Equipped with non-rising stem (NRS) resilient seated gate valves that comply with AWWA C509.
  • Features two independent clapper style check modules with replaceable seats and disc rubbers for reliable backflow prevention.
  • In-line serviceable assembly design with independently accessible top entry covers, requiring no special tools for maintenance.
  • Ductile iron valve body design ensures durability.
  • Includes four properly located resilient seated test cocks.

Specifications

General

  • Product Type: Double Check Valve Backflow Preventer Assembly
  • Model: MasterSeries LF850
  • Nominal Size: 2 1/2 inch
  • Shutoff Valves: Non-Rising Stem (NRS) Gate Valves
  • Application: Non-health hazard (pollutant) backflow protection
  • Flow Orientation: Horizontal & Vertical Up

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek® Powder Coating (internal and external)
  • Check Seats: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring: Stainless steel

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

Dimensions & Weight (Approximate)

  • Overall Length (A): 24 1/2 in (622 mm)
  • Width (B): 10 25/64 in (264 mm)
  • Height (C): 12 1/2 in (318 mm)
  • Weight (NRS): 226 lb (103 kg)

Certificates & Approvals

  • Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC) Approved
  • ASSE 1015 Listed
  • UL Classified (U.S. & Canada)
  • FM Approved
  • IAPMO Listed
  • CSA Listed
  • AWWA Standard C510 Compliant
  • AWWA Standard C509 Compliant (NRS Shutoff Valves)
  • ASME B16.1 Class 125 Compliant (End Connections)
  • AWWA Class D Flange Compliant (End Connections)
  • NSF/ANSI 61-G Certified

FAQs

What type of backflow protection does the FEBCO LF850 provide?

The FEBCO MasterSeries LF850 provides protection against backpressure and backsiphonage conditions for non-health hazard (pollutant) applications in potable drinking water systems.

What are the key features of the LF850's construction?

It features a ductile iron valve body with ArmorTek® advanced epoxy coating for corrosion resistance, stainless steel check components, and non-rising stem (NRS) resilient seated gate valves. It also includes captured modular spring assemblies, reversible and replaceable discs, and field replaceable seats.

Is this backflow preventer considered "lead free"?

Yes, the LF850 is constructed with lead free materials. The wetted surface of this product that contacts consumable water contains less than 0.25% of lead by weight, complying with low lead installation requirements.

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

The maximum working pressure for this 2 1/2 inch LF850 assembly is 175 psi (12.1 bar). It can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

Are special tools required for servicing the FEBCO LF850?

No, the LF850 is designed as an in-line serviceable assembly, and no special tools are required for servicing its check modules, which are accessed through independently top entry covers.

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