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Conbraco 1/2" AVB

Conbraco 38-203-01 1/2 in Atmospheric Vacuum Breaker (AVB)

Brand: Conbraco Industries
Save 25%
$45.20
$33.90
SKU 38-203-01

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The Conbraco 38-203-01 1/2 in Atmospheric Vacuum Breaker (AVB) protects potable water systems from back‑siphonage at indoor point‑of‑use fixtures. Compact and corrosion‑resistant, this AVB is designed for easy installation and service where spillage is acceptable and routine maintenance is possible.

  • 1/2 in nominal inlet size; model 38-203-01.
  • Brass body with optional chrome-plated finish; polypropylene internal softgoods for reliable sealing.
  • Rated for 125 psi maximum working pressure and temperatures up to 212°F (100°C).
  • Not for continuous pressure application—maximum 12 hours in any 24‑hour period; install minimum 6 in above downstream piping with no downstream shutoffs.
  • Prevents back‑siphonage of polluted water into potable systems; ideal for irrigation, laboratory, and general plumbing point‑of‑use applications.
  • Compact footprint (approx. 2-5/8 in height) and simple service access; replacement parts and technical documents available.

Documents: Installation & maintenance instructions and the submittal sheet are available from the manufacturer. Always verify local code requirements before installation and keep the device accessible for periodic inspection.

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Frequently Asked Questions

What pressure and temperature ratings does this AVB support?
Rated to 125 psi and 212°F. Not for continuous pressure beyond 12 hours.
How should I install the Conbraco 38-203-01 AVB?
Install minimum 6 inches above downstream piping with no downstream shutoffs; keep accessible for maintenance.
What materials and maintenance are required for this AVB?
Brass body with polypropylene internal softgoods. Inspect periodically and replace softgoods if leaking.

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