TOTO THU9090R adapter for installing a Washlet on an Aquia

Discussion in 'Toilet Forum discussions' started by Terry, Oct 13, 2016.

  1. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    [​IMG]

    TOTO THU9090R adapter for extending the supply line farther lower to help with the Washlet installation on a TOTO Aquia.

    [​IMG]

    This converts the 7/8" female to 7/8" male threads as an extension.

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    TOTO CST416M with the A200 Washlet. SW2024-01
     
  2. ratazana

    ratazana New Member

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    Dec 1, 2016
    Location:
    Ontario
    Do I have to remove the tank to install the extension? Thanks.
     
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  4. Terry

    Terry Administrator Staff Member

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    Plumber
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    The tank installs with two screws. Turn off the water supply, Rotate the canister out, remove the two screws and lift off the tank.
     
  5. buckminster

    buckminster New Member

    Joined:
    Dec 30, 2018
    Location:
    spaceship earth
    Got the Toto C200 washlet for my wife = happy wife, happy life, as they say..:D

    Problem: the Tee-fitting supplied with the C200 [IMG_1691] has a bottom flange that is 7/8" IPS - so far so good - but this flange has a 1/8" thickness that is machined flat on the mating surface [IMG_1690]. This flat surface doesn't make a water-tight seal using the typical USA 7/8" & cone washer connection that toilet supply hoses here in the US come with.

    What water supply hose connection type and/or washer do I need to connect to my angle stop? Will the Toto THU9090R hose extension's white plastic connector fit this flange? I'd prefer a hose that has a 3/8" compression fitting at the angle stop.

    Thanks in advance!
     

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  6. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Check the toilet supply lines at your favorite plumbing stuff place. Most of them, I think, have a flat washer rather than a cone.

    You can use a little silicone grease on the washer. No tape.

    Most have 3/8 compression on the other end -- just what you want.
     
  7. Terry

    Terry Administrator Staff Member

    Joined:
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    Plumber
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    Bothell, Washington
    [​IMG]

    You will want a 16" or 20" supply line. 3/8" x 7/8"
     
  8. buckminster

    buckminster New Member

    Joined:
    Dec 30, 2018
    Location:
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    Thanks will make a run at it with a proper plumbing supply shop. All Home Despot's 7/8" fittings had a small brass cone in the base, which made the connection not sealable with the Toto flat-faced Tee fitting and its flat washer. Stay tuned.
     
  9. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    [​IMG]

    The tee comes with an extra washer for the fill valve. Use one on the top of the fitting, and save the second one. The flex connector has a washer already on it's end.
     
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