3/4 715A AVB

Item Number: 715D
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$170.62
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Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 3/4 inch
  • Weight: 28.2 lb
  • Body Material: Bronze
  • Maximum Working Pressure: 150 PSI
  • Temperature Range: 32°F to 180°F
  • End Connections: Female NPT
  • Protects against backsiphonage
  • Internal parts serviceable from top
  • Approved by ASSE 1001, B64.1.1, UPC

Description

This 3/4 inch FEBCO 715 Series Atmospheric Vacuum Breaker (AVB) is a backflow preventer designed to protect water supplies from backsiphonage. With a robust bronze body and lightweight plastic poppets, it's suitable for non-continuous pressure applications such as hose bibbs, chemical vats, turf irrigation systems, and laboratory sinks. It features female NPT connections and can withstand working pressures up to 150 PSI and water temperatures from 32°F to 180°F. The unit is easily serviceable in line from the top. It is approved by ASSE 1001, B64.1.1, and UPC standards. Item number 715D.

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Installation Guidelines

  • This atmospheric vacuum breaker must be installed on the discharge side of the last shutoff valve.
  • It requires a minimum installation height of 6 inches (150mm) above the highest overflow level of the equipment it protects.
  • The air inlet must always be in a level position.
  • Note: No valve of any type, including shutoff valves, may be installed downstream of this atmospheric vacuum breaker.

Connection Type

  • The unit features female NPT inlet and outlet connections, designed to connect with corresponding male NPT threaded fittings.
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Additional Details

This 3/4 inch atmospheric vacuum breaker backflow preventer assures positive protection against backsiphonage of impure water into the main supply if pressure loss causes vacuum conditions.

Primary Applications

  • Hose bibbs
  • Chemical vats
  • X-ray tanks
  • Turf irrigation systems
  • Laboratory sinks

Features

  • Features a durable bronze body.
  • Equipped with lightweight plastic poppets and resilient rubber poppet discs for positive closure.
  • Internal parts are serviceable in line from the top of the unit, simplifying maintenance.
  • End Connections: NPT ANSI/ASME B1.20.1.
  • Meets all specifications of ASSE.

Operation

The unit operates by sealing the air inlet with a poppet when pressurized. During a backsiphonage event, the poppet drops, allowing air to enter the downstream piping and preventing foreign materials from entering the upstream supply. Restoration of pressure then lifts the poppet to reseal the air inlet.

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, consult your local water authority, building and plumbing codes.

Specifications

  • Valve Body Material: Bronze
  • Size: 3/4 inch
  • Maximum Working Pressure: 150 PSI (10.3 bar)
  • Hydrostatic Test Pressure: 150 PSI (10.3 bar)
  • Temperature Range: 32°F to 180°F (0°C to 82°C)
  • Poppet Material: Acetal/Polypropylene
  • Elastomer Material: Nitrile
  • End Connections: Female NPT

Dimensions (Approximate)

  • Overall Height (A): 2 7/8 inches (73 mm)
  • Width (B): 1 3/8 inches (35 mm)
  • Depth (C): 1 3/8 inches (35 mm)
  • Height to Air Inlet (D): 2 1/2 inches (64 mm)

Weight (Approximate)

  • Unit Weight: 1 lbs (0.5 kgs)

Certificates & Approvals

  • ASSE: 1001
  • B64.1.1
  • UPC

FAQs

What is the primary function of the FEBCO 3/4 inch Atmospheric Vacuum Breaker?

Its primary function is to provide positive protection against backsiphonage, preventing impure water from entering the main supply line during pressure loss or vacuum conditions.

What are the ideal applications for this atmospheric vacuum breaker?

This vacuum breaker is suitable for non-continuous pressure applications such as hose bibbs, chemical vats, X-ray tanks, turf irrigation systems, and laboratory sinks.

What are the maximum operating pressure and temperature range for the 715D?

The maximum operating pressure is 150 PSI (10.3 bar), and it can withstand water temperatures from 32°F to 180°F (0°C to 82°C).

Can I install a shutoff valve downstream of this atmospheric vacuum breaker?

No, the installation guidelines explicitly state that no valve of any type, including shutoff valves, may be installed downstream of an atmospheric vacuum breaker.

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

The valve body is made of bronze, the poppet is Acetal/Polypropylene, and the elastomers are Nitrile.