Can't turn off shut off value to dishwasher

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Dato Da, Aug 24, 2014.

  1. Dato Da

    Dato Da New Member

    Messages:
    7
    Hi,

    I am thinking about replacing my dishwasher. The line that goes to the left is the water supply to the dishwasher:

    P1000678.JPG

    The problem is this: I can't turn the valve in either directions. Any suggestion on what I may do to loosen it up? Thanks.

    Side question: I was surprised to see a copper pipe going into the dishwasher. The house was built in 2012. Was this typical back then?
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,359
    Location:
    Yakima WA
    Not typical if it is hard piped into the DW valve. Might just go part way then adapt to a flex tube. All I can suggest to close the valve is turn harder. But, I would suggest a 1/4 turn valve here, so just shut the water off to the sink and cut the old valve out. Then put the new valve on and change the pipe to a flex line.
  3. Terry

    Terry Administrator Staff Member

    Messages:
    15,129
    Location:
    Bothell, Washington
    You should be able to turn that valve. Clockwise to close.
    If it's stiff, you can loosen the bonnet nut, but it needs to be snug enough to prevent a drip.

    Soft copper is fine for the dishwasher hookup. Looks to be 3/8" OD soft L
  4. plumber69

    plumber69 Member

    Messages:
    41
    Location:
    BC
    I use small channel locks, 1/8 of a turn will loosen it up
  5. Reach4

    Reach4 Well-Known Member

    Messages:
    2,423
    Location:
    IL
    I suspect that your version of small might differ from Dato Da's. I would probably opt for Visegrips, because that is what I keep most at hand. [​IMG]
  6. Dato Da

    Dato Da New Member

    Messages:
    7
    Thank you guys for the answers.

    I took the bottom panel of the dishwasher off to check if it's a flexible leading to the machine-- No, it's that same copper line going from the valve to the washer. I also found that the dishwasher was "glued" (not sure if it's silicon or epoxy) to the granite counter top, and I still couldn't budge it after I scraped off the glue.

    Because of these complications (to me :)), I am leaving this job to the professional-- I decided to buy the uninstallation/installation service from where I bought the new dishwasher.

    In order not to sound like an idiot when talking with the plumber who does the installation, I'd like to run a few things by you guys first:
    1. Can that copper line on the left be reused for the new dishwasher? I think the conventional wisdom is to have the water supply line replaced at the same time when the dishwasher is replaced, but I just want to know if that's an option.
    2. Can I have the hex fitting on the left and the copper line removed, and a flexible stainless steel hose fit to the existing shut off valve?

    Thanks again.
  7. Terry

    Terry Administrator Staff Member

    Messages:
    15,129
    Location:
    Bothell, Washington
    Many homeowners use the installation service from the people they buy the dishwasher from.
    I get so many calls from homeowners saying that they dropped off the dishwasher, but the installer didn't quite know how to replace a shutoff. Anything that isn't done with a pair of pliers seems to be beyond their skill set.

    You can maybe reuse the old soft copper line, and you will need a new compression sleeve if you do. anytime copper is rebent it gets stiffer. I use a new soft copper line, or a braided stainless. I don't like reusing any old supply line. It never is worth the intial savings.

    You will need to high loop or use an air-gap for the drain if it goes to the disposer.

    [​IMG]
  8. Dato Da

    Dato Da New Member

    Messages:
    7
    Thanks, Terry, for your answers. Now you got me worried about using that installation service. :)

    I am not going to reuse that copper line. I assume the braided stainless steel hose would fit with that exiting shut off valve; i.e. no shut off valve replacement is needed. Is that assumption correct? Thanks.
  9. Terry

    Terry Administrator Staff Member

    Messages:
    15,129
    Location:
    Bothell, Washington
    You look to have a standard 3/8" OD compression shutoff.
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