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Thread: Upflow valve for a GAC filter?

  1. #1
    DIY Junior Member shanlar's Avatar
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    Default Upflow valve for a GAC filter?

    Does anyone recommend using an upflow valve in replace of a mechanical backwash valve for a GAC filter?

  2. #2
    Water systems designer, R&D ditttohead's Avatar
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    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.

  3. #3
    DIY Junior Member shanlar's Avatar
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    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...

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    DIY Junior Member shanlar's Avatar
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    Found all the info I needed. Thanks for the great archive of posts! http://www.terrylove.com/forums/show...izer-questions

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