TOTO Water Hammer

Discussion in 'Toilet Forum discussions' started by JoeRI, Feb 17, 2020.

  1. JoeRI

    JoeRI New Member

    Joined:
    Feb 17, 2020
    Location:
    Rhode Island
    Hello,

    I recently purchased and installed a new Toto Promenade II after a bathroom update. The previous toilet was 15 y/o Mansfield.

    I love the Toto. However, I notice that the fill valve closes much faster than the previous toilet. Because of this, I am getting a slight water hammer (I hesitate to call it a true water hammer, its more like a slight vibration). This did not happen with the previous toilet and I have not changed the existing shut off (it was in great shape).

    I called Toto. Their advise was to close the shutoff slightly (like 3/4 open). Sounds like a bad idea to me. Any other options beside changing the fill valve?

    Also, I see that they make mini hammer arrestors for the supply line. Has anybody used one? If so, how do you like it?

    Also, if it matters, we are on well water. I do get a hammer on our front load washing machine (i have installed mini arrestors here to get rid of the problem).
     
  2. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    Toto is correct

    The supply valve to most fixtures is a globe pattern type and the reason being a globe valve is designed for throttling
     
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  4. JoeRI

    JoeRI New Member

    Joined:
    Feb 17, 2020
    Location:
    Rhode Island
    I have a quarter turn ball stop i believe. Its by brasscraft. Does that make any difference?
     
  5. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    A 1/4 turn will also throttle down. I would play with it and see what happens.
     
  6. JoeRI

    JoeRI New Member

    Joined:
    Feb 17, 2020
    Location:
    Rhode Island
    Ok. I will start with the shut off.

    If that doesnt work, has anybody had luck with the mini arrestor on the supply line?
     
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