1 1/4 765-QT-FZ PVB

Item Number: T765FBV
1 1
$1,060.46
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Connection Size: 1 1/4 inch NPT
  • Body Material: Durable Bronze
  • Maximum Operating Pressure: 150 psi
  • Temperature Range: 32°F to 140°F
  • Includes Integrated Freeze Sensor
  • Plastic Bonnet for Freeze Protection
  • Serviceable In-Line from Top
  • Approved: ASSE 1020, CSA B64.1.2, UPC

Description

The FEBCO Series 765 1 1/4 inch Pressure Vacuum Breaker Backflow Preventer with Freeze Sensor is designed to protect potable water systems from health and non-health hazard backsiphonage. This robust bronze-bodied assembly features a spring-loaded check valve and air relief valve, ensuring reliable backflow prevention for industrial, cooling, laundry, swimming pool, and sprinkler systems. An integrated freeze sensor, compatible with SentryPlus Alert technology and an optional connection kit, provides crucial temperature monitoring and alerts. Rated for 150 psi working pressure and temperatures from 32°F to 140°F, it offers durable and efficient protection with in-line serviceable components. Item number T765FBV.

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Installation Requirements

  • This pressure vacuum breaker must be installed a minimum of 12 inches above the highest downstream outlet and the highest point in the downstream piping to prevent backpressure.
  • Install in an easily accessible location for maintenance and periodic testing, and where discharge is not objectionable.
  • Ensure discharge pressure is maintained above 3.0 psi to properly seat the spring-loaded air inlet poppet.

Freeze Sensor Activation

  • An add-on connection kit (sold separately) is required to activate the integrated freeze sensor. Without this kit, the sensor operates as a passive component with no communication capabilities.
  • The connection kit enables the sensor to communicate freeze alerts via Wi-Fi, Building Management Systems (BMS), or Irrigation Management Systems (IMS).
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Additional Details

This FEBCO Series 765 Pressure Vacuum Breaker Backflow Preventer with a 1 1/4 inch NPT connection protects potable water systems from backsiphonage of health and non-health hazard liquids. It is suitable for use in industrial plants, cooling towers, laboratories, laundries, swimming pools, and lawn sprinkler systems.

This assembly features a bronze body for durability and includes a freeze sensor designed for use with SentryPlus Alert® technology to monitor temperature and signal facility personnel when freeze conditions approach. The sensor is a standalone unit and requires an add-on connection kit (sold separately) to activate its monitoring capabilities, including Wi-Fi communication for alerts.


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. Always consult your local water authority, building, and plumbing codes before installation.
WARNING: The freeze sensor solely provides alerts and cannot prevent a freeze event. User action is required to prevent freeze conditions from causing product and/or property damage.

Key Components

  • Bronze body construction for long-lasting durability.
  • A single spring-loaded check valve closes tightly when pressure drops below 1 psi or flow stops.
  • An air relief valve with opening port breaks the siphon when pressure drops to 1 psi.
  • Features two resilient seated shutoffs and two resilient seated test cocks integral to the assembly.
  • Engineered plastic bonnet protects the valve body from freeze damage.
  • All internal parts are serviceable in-line from the top of the unit.

Freeze Sensor Technology

  • Includes a standalone freeze sensor to monitor temperature near or at water-carrying outdoor installations vulnerable to freezing.
  • The sensor can trigger alerts for low and freezing temperatures when connected to a monitoring system via an add-on connection kit (sold separately).
  • Connection kit (sold separately) allows for communication via built-in Wi-Fi, Building Management Systems (BMS), or Irrigation Management Systems (IMS).

Specifications

  • Product Type: Pressure Vacuum Breaker
  • Model Series: FEBCO 765-QT-FZ
  • Connection Size: 1 1/4 inch
  • Body Material: Bronze
  • Elastomers: Nitrile
  • Max. Working Pressure: 150 psi (10.3 bar)
  • Hydrostatic Test Pressure: 300 psi (20.7 bar)
  • Temperature Range: 32°F to 140°F (0°C to 60°C)
  • End Connections: NPT ANSI/ASME B1.20.1

Certificates & Approvals

  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
  • ASSE 1020
  • CSA B64.1.2
  • UPC

Dimensions & Weight (1 1/4 inch)

  • Height (A): 9 1/4" (235 mm)
  • Height (A1, with union): 10 1/4" (260 mm)
  • Length (B): 10" (254 mm)
  • Length (B1, with union): 11" (279 mm)
  • Width (C): 4" (102 mm)
  • Depth (D): 6 1/4" (159 mm)
  • Depth (D1, with union): 7 1/4" (184 mm)
  • Side Dimension (E): 7" (178 mm)
  • Side Dimension (E1, with union): 8" (203 mm)
  • Approximate Weight (without union end ball valves): 7.0 lb (3.2 kg)

FAQs

What is the primary function of the FEBCO Series 765 1 1/4 inch PVB?

Its primary function is to protect potable water systems from backsiphonage of health and non-health hazard liquids, commonly used in industrial, irrigation, and other non-potable water applications.

Can this backflow preventer be used for drinking water systems in the United States?

No, a warning states that 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.

How does the integrated freeze sensor work, and what is needed to activate it?

The freeze sensor monitors temperature and signals facility personnel when freeze conditions approach. To activate its full monitoring and alert capabilities, an add-on connection kit (sold separately) is required.

What are the main installation requirements for this pressure vacuum breaker?

The assembly must be installed a minimum of 12 inches above the highest downstream outlet and the highest point in the downstream piping. It also requires an easily accessible location for maintenance and testing, and where discharge is not objectionable.

What materials are used in the construction of the FEBCO Series 765 PVB?

The main valve body is constructed from durable bronze, while the elastomers are made of Nitrile. It also features an engineered plastic bonnet for freeze protection.