1 1/2 710A AVB
Item Number: 710GBrand - Febco
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- Size: 1 1/2 inch Female NPT
- Weight: 25.1 lb
- Body Material: Bronze
- Maximum Working Pressure: 150 PSI
- Temperature Range: 32°F to 110°F
- Poppet Material: Acetal/Polypropylene
- Protects against backsiphonage
- Approved by ASSE 1001 and CSA B64.1.1
- For non-continuous pressure applications
Description
Description
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Installation Guidelines
- This atmospheric vacuum breaker is designed to protect a cross-connection against backsiphonage where the vacuum breaker is not subjected to back pressures.
- It must be installed on the discharge side of the last shutoff valve.
- Code requirements vary, but a minimum of 6 inches (150mm) above the highest overflow level is required.
- The air inlet must be installed in a level position.
Note: Do not install any valve or shutoff device on the discharge side of this atmospheric vacuum breaker.

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Additional Details
This 1 1/2 inch FEBCO Series 710 Atmospheric Vacuum Breaker Backflow Preventer provides positive protection against backsiphonage of impure water into the main supply system.
It is designed for non-continuous pressure applications where pressure loss could cause vacuum conditions, ideal for protecting water in systems like hose bibbs, chemical vats, X-ray tanks, turf irrigation systems, and laboratory sinks.
Features
- Assures positive protection against backsiphonage
- Bronze body construction for durability
- Designed for cold water applications
- Internal parts are serviceable in-line from the top of the unit
- Lightweight plastic poppets with resilient rubber poppet discs ensure positive closure
- Meets all specifications of ASSE
- Simple service procedures
- End connections are 1 1/2 inch female NPT ANSI/ASME B1.20.1
Operation
- A poppet seals the air inlet when the unit is pressurized.
- During a backsiphonage event, the poppet drops to allow air to enter the downstream piping.
- The poppet simultaneously shields the water inlet, preventing foreign materials from entering the upstream piping.
- Restoration of pressure (flow) lifts the poppet to seal 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 standard material product, consult your local water authority, building and plumbing codes.
Specifications
- Valve Body Material: Bronze
- Elastomers Material: Nitrile
- Poppet Material: Acetal/Polypropylene
- Maximum Working Pressure: 150 PSI (10.3 bar)
- Hydrostatic Test Pressure: 150 PSI (10.3 bar)
- Temperature Range (Series 710): 32°F to 110°F (0°C to 43°C)
Dimensions (for 1 1/2 inch)
- A Dimension: 4 5/8 inches (118 mm)
- B Dimension: 2 1/8 inches (54 mm)
- C Dimension: 2 1/8 inches (54 mm)
- D Dimension: 4 1/2 inches (114 mm)
- Approximate Weight: 3.75 lbs (1.7 kgs)
Certificates & Approvals
- ASSE 1001
- CSA B64.1.1
- UPC