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Thread: What determines hose bibb size?

  1. #1
    DIY Senior Member DavidTu's Avatar
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    Default What determines hose bibb size?

    For 2x4 walls with wood siding what determines the appropriate 3/4" tube length for a vacuum breaker non-freezing hose Bibb?

  2. #2
    In the Trades Gary Swart's Avatar
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    Mine are 12" long, and that works just find in Yakima which sees colder temperatures than you get in Seattle, so that should be ample length for you. I really don't know if there are different lengths, all you really have to do is get them through the wall with enough length to work with inside. Main thing is to be sure you remove the hose in the fall before frost season. I have recently heard there are some that will drain even with the hose connected, but I haven't actually seen them so I can confirm or deny their effectiveness.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    The determining factor is "how long does it have to be so the operating section is in a warm area".

  4. #4
    Forum Admin, Expert Plumber Terry's Avatar
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    Normally six inches for 2x4 and eight inches for 2x6
    Or longer always works too.

  5. #5
    Retired Defense Industry Engineer jadnashua's Avatar
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    Woodford makes some self-draining frost-free faucets. Here is one of them: http://www.woodfordmfg.com/woodford/.../30Catalog.pdf
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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