Different standpipe sizes?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by mike04gt, Jan 4, 2009.

  1. mike04gt

    mike04gt New Member

    Messages:
    19
    Location:
    Chicago, IL
    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: Jan 4, 2009
  2. kingsotall

    kingsotall Plunger/TurdPuncher

    Gonna need a pic so we can see the type of pipe you have.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,631
    Location:
    Cave Creek, Arizona
    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.
  4. gardner

    gardner DIY Senior Member

    Messages:
    217
    Location:
    Ontario
  5. SewerRatz

    SewerRatz Illinois Licensed Plumber

    Messages:
    1,705
    Location:
    Chicago, IL
    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. mike04gt

    mike04gt New Member

    Messages:
    19
    Location:
    Chicago, IL

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

    Just wanted to make sure it can fit before I buy one, thanks alot!
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