how does a one piece toilet work?

Discussion in 'Toilet Forum discussions' started by cs2eye, Jan 11, 2014.

  1. cs2eye

    cs2eye New Member

    Nov 15, 2013
    New Jersey
    we are researching toilets and have found a couple one-piece toilets we like. speaking with the sales person he was saying that the one piece toilets can be lower and have smaller tanks(?!) because they actually keep water not only in the tank but below the tank in the cavity of the toilet. i was very confused and he could not explain it any further (we must've exhausted his technical knowledge, or he was making stuff up).

    now this is me being more curious than anything- can someone point me to a website as that explains it well or can someone explain what this guy was trying to tell me. most of the sites i've found which explain how a toilet works are focused on the traditional 2 piece system.

    thank you, cs
  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    He was referring to toilets of the past. The old low boy one-piece toilets that came with high volume fill valves. Some of those used 9.5 gallons on the flush. We're talking 80's and older.

    New toilets, since 1992 have used 1.6 gallons or less. It has been at least that long since the one-piece toilets are now like the two-piece toilet counterparts. You have a tank above the bowl, and the water drops through the flush valve and flushes the bowl.

    Is your guy making stuff up? More like recalling ancient history month.

    A current one-piece Ultramax toilet by TOTO


    Kohler Santa Rosa, with flush canister and a Fluidmaster fill valve.
    Last edited: Jan 11, 2014
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