1 1/4 LF850U-QT-FZ DC

Item Number: T122966
1 1
$1,317.01
On Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2-5 Days When Back In Stock

Brand - Febco
  • Lead Free cast copper silicon alloy construction
  • Includes freeze sensor for temperature monitoring
  • Maximum Operating Pressure: 175 PSI
  • Union end connections, NPT ANSI/ASME B1.20.1
  • Quarter turn ball valve shutoffs
  • Compact modular design for in-line repairs
  • ASSE 1015 approved
  • Replaceable seats and seat discs

Description

This 1 1/4 inch Lead Free Double Check Valve Backflow Preventer Assembly protects potable water supplies from pollution caused by backsiphonage or backpressure. Constructed with lead free cast copper silicon alloy, it ensures compliance with installation requirements. The compact modular design allows for easy in-line maintenance with a single access cover. It features union end connections, quarter turn shutoff ball valves, and an integrated freeze sensor for SentryPlus Alert® technology, providing alerts for low temperatures. Rated for a maximum working pressure of 175 PSI, this assembly is suitable for non-health hazard continuous pressure applications and holds ASSE 1015, CSA B64.5, and NSF approvals.

Help Me Connect

This FEBCO Series LF850 Small Double Check Valve Assembly features union end connections with NPT ANSI/ASME B1.20.1 threads for straightforward installation into continuous pressure piping applications. The quarter turn ball valve shutoffs and top-mounted test cocks are designed for easy system isolation and testing.

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Additional Details

This 1 1/4 inch lead free double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering the potable water supply due to backsiphonage and backpressure. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards.

The assembly includes a freeze sensor for use with SentryPlus Alert® technology to signal facility personnel when temperature nears and reaches the freezing point.

Construction & Design

  • Constructed with a Lead Free cast copper silicon alloy body for durability and compliance with Lead Free installation requirements.
  • Compact modular design facilitates easy maintenance with a single access cover for in-line repairs.
  • Features two independently operating, spring-loaded check valves.

Connections & Components

  • Equipped with union end connections and quarter turn ball valve shutoffs.
  • Includes top mounted test cocks.
  • Features two in-line independent positive seating check modules.
  • Comes with replaceable check discs and seats, and captured springs.

Freeze Sensor Information

  • The included freeze sensor monitors temperature and alerts facility personnel to potential freeze conditions.
  • An add-on connection kit is required (sold separately) to activate the freeze sensor for communication via Wi-Fi, Building Management Systems (BMS), or Irrigation Management Systems (IMS).
  • WARNING: The freeze sensor solely provides alerts about a possible freeze event and cannot prevent a freeze event from occurring. User action is required to prevent freeze conditions from causing product and/or property damage.

Specifications

  • Product Type: Double Check Valve Assembly
  • Size: 1 1/4 inch
  • Valve Body Material: Lead Free* cast copper silicon alloy
  • Shutoff Valves: Quarter Turn Ball Valves
  • End Connections: NPT ANSI/ASME B1.20.1 (Union Ball Valves)
  • Check Valves: Two in-line independent positive seating modules
  • Test Cocks: Top Mounted
  • Elastomers: Silicone
  • Springs Material: Stainless Steel
  • Seats & Discs: Replaceable

Pressure & Temperature Ratings

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Hydrostatic Test Pressure: 350 psi (24.1 bar)
  • Temperature Range: 32°F to 140°F (0°C to 60°C)

Certificates & Approvals

  • ASSE 1015
  • CSA B64.5
  • NSF (Certified to NSF/ANSI 61-G)
  • UPC
  • USC-FCCCHR
  • ANSI/AWWA Conformance (C510-92)
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is the primary function of the FEBCO LF850 Small Double Check Valve Assembly?

This assembly is designed to prevent the backflow of polluted water into the potable water supply due to backsiphonage or backpressure. It is intended for non-health hazard applications in continuous pressure piping.

What does 'Lead Free' construction imply for this backflow preventer?

The 'Lead Free' construction means that the wetted surfaces of the product, which come into contact with consumable water, contain less than 0.25% lead by weight. This complies with current Lead Free installation requirements and standards.

How does the included freeze sensor operate?

The freeze sensor monitors the ambient temperature around the assembly and is designed to alert facility personnel when temperatures approach or reach freezing conditions. To activate its communication features via Wi-Fi, BMS, or IMS, an add-on connection kit is required and sold separately.

What are the pressure and temperature limits for this 1 1/4 inch valve?

This 1 1/4 inch valve has a maximum working pressure of 175 psi (12.1 bar) and a hydrostatic test pressure of 350 psi (24.1 bar). Its operating temperature range is 32°F to 140°F (0°C to 60°C).

Is maintenance easy for this double check valve assembly?

Yes, this assembly features a compact modular design that facilitates easy in-line maintenance. It includes a single access cover and replaceable seats and seat discs, simplifying repairs and prolonging product life.