Toilet w/3" flush valve into 3" drain pipe

Discussion in 'Toilet Forum discussions' started by JRyan, Aug 20, 2007.

  1. JRyan

    JRyan New Member

    Feb 1, 2005
    Hazen, ND
    I've been thinking of replacing my old 5 gal/flush toilet with something like the Toto Ultramax. It apparently has a 3" flush valve. I just realized tonight that my drain lines are 3" PVC instead of 4".

    Will I have any problems using a toilet like this with my existing plumbing?

    Thanks for the help...JR
  2. BAPlumber

    BAPlumber Plumber

    Jul 18, 2007
    Journeyman Plumber, business owner
    Vashon, Washington

    no problem with that.
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    The trapway is still smaller than that...the large flapper is what gives it the initial volume to get a good flush and build up a head.
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