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Thread: Negative pressure for keg transfers?

  1. #1
    Join Date
    Feb 2009
    Posts
    67

    Negative pressure for keg transfers?

    It seems to me that you could employ a vacuum pump (modified bike pump?) to negatively pressurize a keg for small volume racking where you might otherwise use a positive displacement pump (but don't have one because it costs as much as an automobile). Top cropping yeast and racking from a barrel both come to mind as possible applications. Thin gauge and straight featureless sides on a keg are likely a dealbreaker, but is this a workable system?

  2. #2
    Join Date
    Mar 2009
    Posts
    14
    Should work great if you want a keg full of foam.

  3. #3
    Join Date
    Mar 2008
    Posts
    20
    Vacuum transfer works fine on non-carbonated beer.

  4. #4
    Join Date
    Oct 2003
    Location
    Santa Rosa CA USA
    Posts
    963
    Why pump at all? Merely using pressure to push is pretty dang common.

  5. #5
    Join Date
    Feb 2009
    Posts
    67
    Quite honestly, it never occurred to me to use this on carbonated beer, or for routine keg filling. I agree with Moonlight on this, and I don't generally pump or pull when pushing is an option. I just think there are a few situations where this might just do the trick. Obviously pushing is an option with a barrel transfer, but pulling seems like it might be a bit better to me (of course this would be done under a co2 blanket).
    Last edited by Vendetta; 03-06-2009 at 09:21 AM.

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