1/2 850U-QT-FZ DC

Item Number: T2611
1 1
$456.37
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Nominal Size: 1/2 inch
  • Body Material: Bronze
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • End Connections: NPT ANSI/ASME B1.20.1 Union
  • Shutoff Valves: Quarter Turn Ball Valves with Tee Handles
  • Includes SentryPlus Alert® Freeze Sensor
  • Certifications: ASSE 1015, CSA B64.5, UPC

Description

This FEBCO 1/2 inch Series 850 Small Double Check Valve Assembly is designed for non-health hazard applications, preventing polluted water backflow in continuous pressure piping systems. Its durable bronze body and compact modular design ensure easy in-line maintenance. It features union NPT end connections, quarter-turn ball valve shutoffs with tee handles, and replaceable internal components. A key feature is the integrated freeze sensor, compatible with SentryPlus Alert® technology, which provides temperature monitoring and alerts when connected to an optional kit, helping protect against freeze damage. This backflow preventer is certified to ASSE 1015, CSA B64.5, and UPC standards. Item number T2611.

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End Connections

  • This 1/2 inch double check valve assembly features NPT ANSI/ASME B1.20.1 threaded union end connections for installation into your piping system.
  • The integrated union ball valve shutoffs facilitate easy installation and removal for maintenance.
  • The assembly requires connections to your local plumbing system, adhering to national plumbing codes and water authority requirements.

Freeze Sensor Connectivity

  • The included freeze sensor is a passive component unless connected to an add-on kit.
  • An add-on connection kit (sold separately) is required to activate the sensor and enable temperature monitoring and alerts.
  • Once activated, the system can provide alerts via Wi-Fi networks, or integrate with existing building management systems (BMS) or irrigation management systems (IMS).
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Additional Details

This 1/2 inch FEBCO Series 850 Small Double Check Valve Assembly prevents the backflow of polluted water into potable water supplies due to backsiphonage or backpressure. It is designed for non-health hazard applications in continuous pressure piping systems and non-potable cross-connections, such as irrigation or industrial processing.

This assembly features a compact modular design for easy in-line maintenance, including a single access cover for repairs. It is equipped with union end connections and quarter-turn ball valve shutoffs.

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing standard material product, consult your local water authority, building and plumbing codes.

Freeze Sensor Technology

  • Includes a freeze sensor for use with SentryPlus Alert® technology to signal facility personnel when temperature nears and reaches the freezing point.
  • An add-on connection kit (sold separately) is required to activate the freeze sensor for a full monitoring system.
  • When activated, the freeze alerts feature is available for Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).
  • The sensor can communicate directly to the user via built-in Wi-Fi, eliminating the need for a third-party controller.

WARNING: 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. 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.

Design and Components

  • Bronze body construction for durability.
  • Two in-line independent positive seating check modules.
  • Replaceable check discs and seats.
  • Captured springs and top mounted test cocks.
  • Tee handle shutoff valves.

Specifications

  • Product Type: Double Check Valve Assembly
  • Nominal Size: 1/2 inch
  • Brand: FEBCO
  • Model Series: 850 Small

Materials

  • Valve Body: Bronze
  • Elastomers: Silicone
  • Springs: Stainless steel
  • Seats: Noryl®
  • Poppet: Noryl
  • Disc Retainer: Noryl
  • Guide: Noryl

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)

Connections

  • End Connections: NPT ANSI/ASME B1.20.1
  • Shutoff Valves: Union Quarter Turn Ball Valves with Tee Handles
  • Test Cocks: Top mounted

Certificates & Approvals

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

FAQs

What is the primary use of the FEBCO 850 Small Double Check Valve Assembly?

This assembly is designed to prevent the backflow of polluted water into potable water supplies in non-health hazard applications. It's ideal for continuous pressure piping systems, irrigation, and industrial processing.

Is this backflow preventer suitable for drinking water systems?

No, this product is specifically designed for non-health hazard applications and it is illegal to use it in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States.

How does the integrated freeze sensor work?

The freeze sensor works with SentryPlus Alert® technology to monitor temperature and signal facility personnel when conditions approach or reach freezing. An add-on connection kit (sold separately) is required to activate the sensor and enable full monitoring and alerts via Wi-Fi, BMS, or IMS.

What material is the valve body made of?

The valve body is constructed from durable bronze, ensuring longevity and resistance in various non-potable water applications.

What are the end connections for this 1/2 inch model?

This model features 1/2 inch NPT ANSI/ASME B1.20.1 threaded union end connections with quarter-turn ball valve shutoffs and tee handles, designed for easy installation and maintenance.