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Thread: Ball Valves

  1. #11
    Oyagoi kntry's Avatar
    Join Date
    Oct 2004
    Louisiana - KHA
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    Mine will be about 4-5' deep. The pond is 7' at that end.

    I've never liked using knife valves on bottom drains no matter how deep they are.
    The views expressed above are my own personal views and, as such, do not necessarily reflect the views of the AKCA or the KHA program.

  2. #12
    Honmei ricshaw's Avatar
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    Mar 2010
    Southern California
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    Quote Originally Posted by kntry View Post
    I've never liked using knife valves on bottom drains no matter how deep they are.
    I know that you have had bad experiences with knife valves, and I respect that.

    But you said; "The drains are going directly to the sieves. I want the valve in case I have to remove the sieve for some reason. There has to be a way to shut the bottom drains off before the sieves."

    I would have no problem using a knife valve in this situation (left open). I have a buried 4" knife valve used like that that has been in "service" since 1990. Eventually I will have to replace it because the PVC plastic is become brittle with age.

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