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Thread: Old Style Flush Valve

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  1. #1
    DIY Senior Member Kiko's Avatar
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    Default Old Style Flush Valve

    My parents have a really old toilet with a Douglas style brass flush valve. The threaded rod that screws into the flapper ball had broken in half, and I found a replacement threaded rod and flapper at a plumbing supply shop.

    When I screwed the rod into the flapper as far as it would screw, it seemed very loose, so I screwed it beyond the threads a bit, which didn't seem quite right. It still seems that this flapper will unscrew by itself after a while.

    Did I do something wrong, or is that as tight as you can get these things?




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  2. #2
    DIY Senior Member Kiko's Avatar
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    Has no one here ever worked on one of these before??

  3. #3
    Forum Admin, Expert Plumber Terry's Avatar
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    These may need a backing nut to keep them tight.

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    Adjusting the length of the rod sticking out is sometimes the only way to adjust the water level (by making the whole thing longer or shorter). SO, there may not be a stop. And, to keep it adjusted where you want it, you may need to have a nut on the rod as well that you tighten up against the float to help hold the position you've set. Or, it could be poorly engineered foreign made stuff where the sizing is not held to proper tolerances...there's too much of that sort of stuff around, unfortunately.
    Last edited by Terry; 08-06-2011 at 01:29 PM.
    Jim DeBruycker
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    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  5. #5
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    Remove the lift wire guide arm and through out the lift wires and use one of these.

    http://korky.com/Flapper2001BP.html

    John

  6. #6
    DIY Senior Member Kiko's Avatar
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    Jadnashua, there is a stop. It just comes too soon (after only a couple of turns). That's why I screwed it beyond the stop into the rubber to try to tighten it more.

    Terry, I'm not sure I can find a backer nut to fit this, since the threaded lift rod has such a tiny diameter (~1/16").

    John, do you really think a universal Korky flapper can replace this?



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    Last edited by Kiko; 08-06-2011 at 08:25 PM.

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