What plumbing dangers can a portable dishwasher cause?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by aum217, Nov 16, 2009.

  1. aum217

    aum217 New Member

    Messages:
    1
    Location:
    new york
    I have a tenant who would like 2 use a portable dishwasher-& the building is in good shape but it is pre war. could the pipes burst inside the walls or begin to leak from the water pressure?-are these realistic fears? or is there any other dangers? is there really no danger & I should just let them use it?
  2. Doherty Plumbing

    Doherty Plumbing Journeyman & Gas Fitter

    Messages:
    810
    Location:
    Penticton, BC
    The little dishwashers you wheel up to the kitchen sink and hook up to the faucet?

    Are those the ones you're talking about?

    If so I think you have no worries at all about excess pressure because these devices shouldn't be causing back pressure on your water piping....

    Let them use it :cool:
  3. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,308
    Location:
    Yakima WA
    Even a built-in dishwasher doesn't create pressure on the water supply line. You do have to do a bit more with the drain for a built-in, but the portables drain into the sink.
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,270
    Location:
    Cave Creek, Arizona
    dw

    The most likely problems with a portable, are;
    1. the water hose could break flooding the kitchen, and downstairs apartments.
    2. The sink could be plugged, or the drain stopper falls into place, and the water would overflow, also causing the flood and damage.
    3. The faucet might be damaged by the excessive pressure which the spout was not designed for, also causing a flood.
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