Febco 3" LF850 Less Gates

Item Number: 0124522
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$5,109.00
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Nominal Size: 3 inch
  • Valve Type: Double Check Valve Assembly
  • Lead Free: Yes (<0.25% lead by weight)
  • Body Material: Ductile Iron (ArmorTek coated)
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Serviceability: In-line, no special tools required
  • Application: Non-health hazard backflow prevention

Description

The Febco 3 inch LF850 MasterSeries Double Check Valve Assembly is a lead-free solution for protecting potable water systems from non-health hazard pollutants. Designed for backpressure and backsiphonage prevention, this in-line assembly features an epoxy-coated ductile iron body with ArmorTek® technology, enhancing corrosion resistance. It includes two independent check modules with replaceable stainless steel seats and discs, offering easy maintenance without special tools. This assembly, supplied without shutoff valves, maintains a maximum working pressure of 175 psi and operates within a temperature range of 33°F to 140°F, making it suitable for various non-health hazard applications. Item number 0124522.

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Connections and Applications

  • This 3 inch double check valve assembly features standard flanged end connections compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.
  • Designed for horizontal or vertical-up installation in potable water supply systems.
  • Specifically intended for non-health hazard (pollutant) applications to prevent backflow from backsiphonage or backpressure conditions.
  • Ideal for containment at the service line entrance or for protection of non-health hazard cross-connections.
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Additional Details

The Febco 3 inch LF850 MasterSeries Double Check Valve Assembly, supplied without shutoff valves, is specifically engineered to protect potable drinking water systems from non-health hazard pollutants due to backpressure and backsiphonage.

This in-line design backflow preventer is ideal for non-health hazard cross-connections or service line entrance containment where pollutants are objectionable but not toxic.

Design and Construction

  • Features a robust ductile iron valve body (Grade 65-45-12) coated with ArmorTek®, a patented three-part advanced epoxy system that resists microbial-induced corrosion (MIC) and protects against exposed metal substrate.
  • Designed with two independently acting clapper style check modules for reliable backflow prevention.
  • In-line serviceable assembly with independently accessed top entry covers, requiring no special tools for servicing.
  • Includes field replaceable seats, reversible and replaceable discs, and stainless steel check components.
  • Features a winterization feature with disc retainers and valve body drain ports.
  • Captured O-ring design for enhanced seal integrity.

Compliance

  • Constructed as Lead Free*, ensuring the wetted surface contains less than 0.25% lead by weight, in compliance with low lead installation requirements.

Specifications

  • Model: LF850 MasterSeries
  • Valve Type: Double Check Valve Assembly
  • Nominal Size: 3 inch
  • Shutoff Valves: Less Shut-off Valves (Less Gates)
  • Body Material: Ductile Iron Grade 65-45-12
  • Coating: ArmorTek Powder Coating (internal and external surfaces)
  • Check Seats Material: Stainless Steel
  • Disc Holder Material: Stainless Steel
  • Elastomer Disc Material: Silicone
  • Spring Material: Stainless Steel
  • Lay Length: 25.625 inch
  • Weight: 165 lbs
  • 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 1015 Listed
  • IAPMO
  • CSA Listed
  • AWWA Standard C510 Compliant
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • NSF Certified to NSF/ANSI 61-G

FAQs

What is the primary application of the Febco 3 inch LF850 Double Check Valve Assembly?

This backflow preventer is designed for non-health hazard (pollutant) applications in potable drinking water systems. It prevents backflow due to backsiphonage and backpressure from objectionable but non-toxic substances.

Does this LF850 assembly include shutoff valves?

No, this specific configuration is supplied 'less gates' or 'less shut-off valves'. It is the core double check valve assembly without integrated isolation valves.

What is ArmorTek® coating and why is it important?

ArmorTek® is a patented three-part advanced epoxy system applied to the ductile iron body. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal, extending the lifespan of the backflow preventer.

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

The Febco 3 inch LF850 can operate at a maximum working pressure of 175 psi (12.1 bar). Its continuous operating temperature range is 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 for in-line serviceability, and no special tools are required for maintaining its check modules, which are accessed through independently top entry covers.

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