flushing a Moen posi-temp valve

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Ross Hunt, Oct 23, 2007.

  1. Ross Hunt

    Ross Hunt Software Engineer

    Sep 12, 2007
    Software Engineer
    Bellevue, WA
    I am remodeling two bathrooms in my house. I just installed a Moen posi-temp (with stops) valve in one of them. The installation instructions recommended removing the cartridge and flushing the valve before running water with the cartridge installed. Even though I had the stop tube in place, it was still difficult to get the water to just go in the tub and prevent the water from leaking around the valve and into the wall behind the valve. I have another valve to install in the other bathroom. Any suggestions as to how to accomplish this without leaking water all over the place?
  2. Master Plumber Mark

    Master Plumber Mark Master Plumber

    Feb 6, 2005
    Sensitivity trainer...to be caring and loving to a
    indianapolis indiana - land of the free, home of
    leave it alone

    moen posi temp are mean to fool with
    even when they are new...

    if you must do that I guess you could find a slightly larger
    pipe than the shaft comming outof the wall
    like a 1 1/2 pvc tail piece to funnel the water
    into the tub....

    I would probably not mess with it if it were mine..
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