atmospheric vacuum breaker

  1. Todd F

    Need to Understand Anti-Siphon vs AVB

    Dear Forum, I'm trying to understand if the "Anti-Siphon" function built into hose bibs today is effectively just an "Atmospheric Vacuum Breaker"? Thanks so much, ...Todd
  2. Todd F

    Is it against code to connect a timer to a hose bib?

    I have connected 1 orbit 4 Zone Timer to my hose bib so that the timer is of course downstream. Plumbing code states as follows... "A shutoff valve should never be placed downstream of any AVB, as this would result in continuous pressure on the AVB" I have also come to learn that hose bibs...
    • Todd F
    • Thread
    • anti-siphon valve atmospheric vacuum breaker avb continuous pressure hose bib irrigation sillcock timer
    • Replies: 7
    • Forum: Irrigation / Sprinkler Forum
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