1/2 850-QT-FZ DC

Item Number: T1111
1 2
$392.24
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 1/2 inch
  • Body Material: Bronze
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • Includes integrated freeze sensor for SentryPlus Alert® technology
  • End Connection: NPT ANSI/ASME B1.20.1
  • Designed for non-health hazard applications
  • Replaceable seats and seat discs

Description

The Febco Series 850 Small Double Check Valve Assembly, 1/2 inch, prevents backflow of polluted water in non-health hazard applications. Ideal for irrigation, fire lines, or industrial processing, this durable bronze assembly features NPT end connections and quarter turn ball valve shutoffs. It includes an integrated freeze sensor that alerts facility personnel to freezing temperatures via SentryPlus Alert® technology when connected to an add-on kit. This device is not suitable for potable water systems and has a maximum working pressure of 175 psi.

Help Me Connect

The Febco 1/2 inch Series 850 Double Check Valve Assembly features NPT end connections, which comply with ANSI/ASME B1.20.1 standards for threaded pipe connections. Ensure your piping system utilizes compatible 1/2 inch NPT threads for proper installation.

The integrated freeze sensor enhances system monitoring. To activate the sensor for active alerts and integrate with your network, an add-on connection kit (sold separately) is required. This kit enables communication with Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).

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Additional Details

The 1/2 inch Febco Series 850 Small Double Check Valve Assembly is designed to prevent the backflow of polluted water from entering potable water supplies due to backsiphonage and/or backpressure in non-health hazard applications such as irrigation, fire line, or industrial processing.

Its compact, modular design aids in easy maintenance with a single access cover for in-line repairs. This assembly includes an integrated freeze sensor for use with SentryPlus Alert® technology to signal facility personnel when temperature nears and reaches the freezing point, helping to prevent damage from freezing conditions.

Connections

  • Features NPT end connections, ANSI/ASME B1.20.1 compliant.
  • Includes quarter turn ball valve shutoffs for reliable operation.
  • Top mounted test cocks are provided for convenient testing.

Design and Construction

  • Constructed with a durable bronze body for longevity.
  • Features two in-line independent positive seating check modules.
  • Includes captured springs and replaceable check discs and seats for easy maintenance.
  • Modular compact design allows for simplified in-line repairs.

Freeze Sensor Features

  • Includes a standalone freeze sensor to monitor temperature and alert facility personnel.
  • Freeze alerts feature is available with an add-on connection kit (sold separately) for integration with Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).

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.

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.

An add-on connection kit (sold separately) is required to activate the freeze sensor. Without the connection kit, the sensor is a passive component that does not communicate with any other device.

Specifications

  • Body Material: Bronze
  • Elastomer Material: Silicone
  • Spring Material: Stainless steel
  • Seat Material: Noryl®
  • Poppet Material: Noryl®
  • Disc Retainer Material: Noryl®
  • Guide Material: Noryl®
  • Retainer Spacer Material: Noryl®

Performance Data

  • 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 Connection: NPT ANSI/ASME B1.20.1

Certificates & Approvals

  • USC-FCCHR
  • CSA B64.4
  • NSF-61-G
  • ANSI/AWWA C510-92 Conformance

FAQs

What is the primary application for the Febco Series 850 Double Check Valve Assembly?

This assembly is designed for non-health hazard applications to prevent the backflow of polluted water. This includes uses in irrigation, fire lines, and industrial processing systems, protecting drinking water supplies from cross-connection.

Does this backflow preventer include a freeze sensor?

Yes, it includes an integrated freeze sensor for use with SentryPlus Alert® technology. This sensor monitors temperature and signals facility personnel if freezing conditions are detected, helping to prevent equipment damage.

What type of connections does this valve assembly feature?

The Febco Series 850 assembly comes with NPT end connections, compliant with ANSI/ASME B1.20.1 standards. It also includes quarter turn ball valve shutoffs for easy operation.

What are the maximum operating pressure and temperature for this device?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar). The recommended operating temperature range is 32°F to 140°F (0°C to 60°C).

Is this product suitable for potable (drinking) water applications?

No, this product is explicitly stated to be illegal for use in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. It is intended for non-health hazard applications only.