1 1/2 LF850-QT-FZ DC

Item Number: T683042
1 2
$1,113.00
Limited Stock (2)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Febco
  • 1 1/2 inch Lead Free Double Check Valve Assembly
  • Integrated freeze sensor for SentryPlus Alert® technology
  • Lead Free cast copper silicon alloy body construction
  • Compact modular design for easy in-line maintenance
  • NPT ANSI/ASME B1.20.1 end connections
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • Replaceable seats and seat discs

Description

The FEBCO 1 1/2 inch LF850 Small Lead Free Double Check Valve Assembly is designed to protect potable water supplies from pollution due to backsiphonage and backpressure in non-health hazard applications. This assembly features a lead free cast copper silicon alloy body and NPT end connections, ensuring compliance with lead-free installation requirements. It includes an integrated freeze sensor that works with SentryPlus Alert® technology to monitor temperatures and provide alerts. The compact modular design allows for easy in-line maintenance with replaceable seats and discs. With a maximum working pressure of 175 psi and a temperature range of 32°F to 140°F, it offers reliable performance.

Help Me Connect

End Connections

  • This 1 1/2 inch double check valve assembly features NPT ANSI/ASME B1.20.1 end connections for connection to standard NPT threaded piping systems.
  • The assembly includes quarter turn ball valve shutoffs with lever handles, typical for 1 1/4 inch to 2 inch sizes, for easy on/off control.

Freeze Sensor Integration

  • The integrated freeze sensor requires an add-on connection kit (sold separately) to activate its monitoring and alert capabilities with Wi-Fi, BMS, or IMS.
View full details

Additional Details

The FEBCO Series LF850 Small 1 1/2 inch Lead Free Double Check Valve Assembly is designed to prevent the backflow of polluted water into the potable water supply due to backsiphonage or backpressure.

It is ideal for protection in continuous pressure piping applications and at cross-connections identified as non-health hazards, as well as for contaminants at the service line entrance.

Freeze Sensor Technology

  • Features an integrated freeze sensor for use with SentryPlus Alert® technology to monitor temperature and signal facility personnel when freeze conditions are near or reached.
  • An add-on connection kit (sold separately) is required to activate the freeze sensor's monitoring system. Without this kit, the sensor is passive and does not communicate.
  • Alerts can be triggered for low and freezing temperatures, available with an add-on connection kit for Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).
  • A switched output relay can augment BMS or irrigation management systems for reinforced control of sprinkler systems.

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. The use of the freeze sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide protection against a freeze event.

Construction & Design

  • Constructed with a Lead Free cast copper silicon alloy body.
  • Features a compact modular design that facilitates easy maintenance with a single access cover for in-line repairs.
  • Includes two independently operating, spring-loaded check valves with two in-line independent positive seating check modules.
  • Equipped with quarter turn ball valve shutoffs and top-mounted test cocks.
  • Designed with replaceable seats and seat discs for extended service life.

Specifications

General

  • Product Type: Double Check Valve Assembly
  • Series: LF850 Small
  • Valve Size: 1 1/2 inch
  • Connections: NPT ANSI/ASME B1.20.1
  • Shutoff Valves: Quarter Turn Ball Valves (Lever Handles)
  • Check Valves: Two in-line, independent, positive seating
  • Test Cocks: Top-mounted

Materials

  • Valve Body: Lead Free cast copper silicon alloy
  • Elastomers: Silicone
  • Springs: Stainless steel

Performance

  • 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)

Dimensions & Weight (Approximate)

  • Length (A): 15 7/8 inches (403 mm)
  • Width (B): 3 inches (76 mm)
  • Height (C): 2 1/2 inches (64 mm)
  • Length (D): 4 1/4 inches (108 mm)
  • Length (E): 2 1/4 inches (57 mm)
  • Weight: 15.8 lbs (7.2 kg)

Certificates & Approvals

  • ASSE 1015
  • CSA B64.5
  • NSF 61-G
  • UPC
  • USC-FCCCHR
  • ANSI/AWWA 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 and backpressure, making it suitable for non-health hazard applications.

Does this valve assembly include a freeze sensor?

Yes, it includes an integrated freeze sensor for use with SentryPlus Alert® technology, which monitors temperature and alerts facility personnel to potential freeze conditions.

How do I activate the freeze sensor's monitoring features?

An add-on connection kit, which is sold separately, is required to activate the freeze sensor's monitoring system and enable alerts via Wi-Fi, BMS, or IMS.

What materials are used in the construction of this backflow preventer?

The valve body is constructed from lead-free cast copper silicon alloy, with silicone elastomers and stainless steel springs, ensuring compliance with lead-free requirements.

What are the pressure and temperature limits for this assembly?

This assembly has a maximum working pressure of 175 psi (12.1 bar) and an operating temperature range of 32°F to 140°F (0°C to 60°C).