1 850-QT-FZ DC

Item Number: T1113
1 2
$468.04
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • 1 inch bronze double check valve assembly
  • Integrated freeze sensor with SentryPlus Alert® technology
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • Bronze body for durability
  • Quarter-turn ball valve shutoffs
  • NPT end connections
  • ASSE 1015 and CSA B64.4 approved

Description

The FEBCO Series 850 Small 1 inch Double Check Valve Assembly is a backflow preventer designed for non-health hazard applications, protecting potable water from cross-connection in irrigation, fire line, or industrial systems. It features a durable bronze body and NPT end connections. An integrated freeze sensor with SentryPlus Alert® technology provides alerts for low temperatures, requiring an add-on connection kit for full functionality with Wi-Fi, BMS, or IMS. This assembly includes quarter-turn ball valve shutoffs, replaceable check discs, and seats for easy maintenance, supporting continuous pressure piping applications. It is ASSE 1015, CSA B64.4, and UPC approved.

Help Me Connect

This FEBCO Series 850 Small Double Check Valve Assembly features NPT ANSI/ASME B1.20.1 end connections, suitable for threaded pipe installations. The assembly includes quarter-turn ball valve shutoffs for isolating the device for maintenance or testing. The integrated freeze sensor requires an add-on connection kit (sold separately) to activate its communication capabilities for Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS).

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Additional Details

This FEBCO Series 850 Small Double Check Valve Assembly is a 1 inch backflow preventer designed to protect drinking water supplies from dangerous cross-connections in non-health hazard applications such as irrigation, fire lines, or industrial processing. Its compact modular design allows for easy maintenance with a single access cover for in-line repairs.

Freeze Sensor Technology

  • Includes a freeze sensor for use with SentryPlus Alert® technology to monitor temperature and alert facility personnel when conditions approach and reach the freezing point.
  • The sensor is installed on the assembly exterior and does not alter assembly functions or certifications.
  • An add-on connection kit (sold separately) is required to activate the freeze sensor for communication with Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS). Without this kit, the sensor is a passive component.

Features

  • All bronze body construction for durability.
  • Compact modular design for easy maintenance and in-line repairs.
  • Features quarter-turn ball valve shutoffs.
  • Includes two independently operating, spring-loaded check valves.
  • Replaceable check discs and seats for extended service life.
  • Equipped with NPT end connections.
  • WARNING: This product is illegal to use in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Always consult your local water authority, building, and plumbing codes before installation. The freeze sensor provides alerts only and cannot prevent freeze events; user action is required to prevent damage.

Specifications

General

  • Product Type: Double Check Valve Assembly
  • Size: 1 inch
  • Body Material: Bronze
  • Check Valve Type: Spring-loaded
  • Shutoff Valves: Quarter Turn Ball Valves
  • Maintenance: Single access cover, replaceable check discs and seats
  • Freeze Sensor: Included, SentryPlus Alert® compatible

Performance

  • Maximum Working Pressure: 175 psi
  • Hydrostatic Test Pressure: 350 psi
  • Temperature Range: 32°F to 140°F

Materials (Key Components)

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

Connections

  • End Connections: NPT ANSI/ASME B1.20.1
  • Test Cocks: Top mounted

Certificates & Approvals

  • ASSE 1015
  • CSA B64.4
  • 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 use of the FEBCO Series 850 Small Double Check Valve Assembly?

This assembly is designed to prevent backflow of polluted water into potable water supplies in non-health hazard applications. Common uses include irrigation systems, fire lines, and industrial processing where the water is not for human consumption.

Is this backflow preventer suitable for drinking water systems?

No, this product is illegal for use in plumbing systems providing water for human consumption, such as drinking or dishwashing, in the United States. Always consult local water authorities and building codes before installation.

How does the integrated freeze sensor work?

The freeze sensor uses SentryPlus Alert® technology to monitor temperature on the assembly exterior and signals facility personnel when temperatures approach or reach freezing. An add-on connection kit (sold separately) is required to activate its communication features for Wi-Fi, BMS, or IMS alerts.

What are the key materials used in this backflow preventer's construction?

The valve body is constructed from durable bronze. Key internal components like elastomers are silicone, while springs are stainless steel. The seats, poppet, and disc retainers are made from Noryl®.

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

This 1 inch double check valve assembly has a maximum working pressure of 175 psi (12.1 bar). It can operate within a temperature range of 32°F to 140°F (0°C to 60°C).