Upflow valve for a GAC filter?

Discussion in 'Water Softener Forum, Questions and Answers' started by shanlar, Sep 26, 2013.

  1. shanlar

    shanlar New Member

    Joined:
    May 22, 2011
    Location:
    Elk Grove, CA
    Does anyone recommend using an upflow valve in replace of a mechanical backwash valve for a GAC filter?
     
  2. ditttohead

    ditttohead Water systems designer, R&D

    Joined:
    Jan 9, 2012
    Occupation:
    Water systems designer, R&D, Technical Director
    Location:
    Ontario California
    It has become a common practice to upflow GAC systems in order to save money, but it also comes with a host of problems. This question can be considered "loaded" since any answer can be argued either way and many companies will fight for their way.

    For the most part, downflow GAC systems work better. Upflow is simpler and it has a lot of potential problems. I will leave it at that for now.
     
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  4. shanlar

    shanlar New Member

    Joined:
    May 22, 2011
    Location:
    Elk Grove, CA
    What are the potential problems?

    What is a decent control valve for a GAC system? A Clack, which I have on my WS, seems a bit overkill for a GAC...
     
  5. shanlar

    shanlar New Member

    Joined:
    May 22, 2011
    Location:
    Elk Grove, CA
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