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

  1. 08-20-2007, 09:12 PM #1
    Jerry Ryan
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    Question Toilet w/3" flush valve into 3" drain pipe

    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
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  2. 08-20-2007, 10:32 PM #2
    BAPlumber
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    Default no

    no problem with that.
    Brent
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  3. 08-21-2007, 06:51 AM #3
    jadnashua
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    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.
    Jim DeBruycker
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