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Thread: Different standpipe sizes?

  1. #1
    DIY Junior Member mike04gt's Avatar
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    Default Different standpipe sizes?

    Hey All,

    Just wondering if anyone knows if they make a standpipe back seal in any other sizes than 4"???

    My drain opening in the floor is 4.5", but I cannot locate any other larger sizes online or at any of the local plumbing stores.

    Thanks~
    Last edited by mike04gt; 01-04-2009 at 06:55 PM.

  2. #2
    Plunger/TurdPuncher kingsotall's Avatar
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    Gonna need a pic so we can see the type of pipe you have.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Default seal

    That's because there is no 4 1/2" pipe. The next size above 4" is 5" and it is such a rare beast, that 6" is most likely to be found.

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    DIY Senior Member gardner's Avatar
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    I think he's talking about the opening in his floor drain, not the pipe it's connected to.

    From the other thread where this all came up http://www.terrylove.com/forums/show...t=25408&page=3, I would assume this is an old cast iron drain installed originally in the 20s or so.

  5. #5
    Illinois Licensed Plumber SewerRatz's Avatar
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    That is 4" ID pipe Go ahead and buy the stand pipe adapter, tighten the screws a bit so its will fit in snug, once you get it in the pipe tighten the screws, the rubber will expand enough to make a seal.

  6. #6
    DIY Junior Member mike04gt's Avatar
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    Quote Originally Posted by gardner View Post
    I think he's talking about the opening in his floor drain, not the pipe it's connected to.

    From the other thread where this all came up http://www.terrylove.com/forums/show...t=25408&page=3, I would assume this is an old cast iron drain installed originally in the 20s or so.

    Yea, its an old cast iron floor drain that measures an odd 4 1/2" opening size.

    Quote Originally Posted by SewerRatz View Post
    That is 4" ID pipe Go ahead and buy the stand pipe adapter, tighten the screws a bit so its will fit in snug, once you get it in the pipe tighten the screws, the rubber will expand enough to make a seal.
    Just wanted to make sure it can fit before I buy one, thanks alot!

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