Using compression fittings vs soldering

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by xms, Nov 4, 2008.

  1. xms

    xms New Member

    Nov 4, 2008
    I'm replacing cabinets and since the original waterline to the dishwasher was added after the old cabinets were installed, I need to cut it and then reconnect it once the new cabinets are in. I have 9 ft. of 1/2 in. copper tubing (makes a 90 deg. turn behind the cabinets) from the shutoff valve to the dishwasher flex connection. 1 1/2 ft of the tubing is accessable under the sink in the cabinet. I'm going to try to attach a picture to this thread.

    If I cut the tubing approx. 6" from the sweated joints of the shutoff valve, will compression fittings on the tubing allow a proper connnection that won't leak?

    If that's not a good idea, if I cut the copper pipe just before the reducing connector, would compression fittings for copper pipe-to-copper tubing allow a proper connection? I don't think I have enough copper pipe to do a copper pipe-to-copper pipe connection with compression fittings.


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  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    Most plumbers are using compression shutoffs unless you live in an area that doesn't allow that.

    I don't even know what State that would be in.
    I've never soldered on a chrome stop before.
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  4. Redwood

    Redwood Master Plumber

    Dec 15, 2007
    Service Plumber
    Here in the northeast sweating on stops is pretty much the norm...
    It's either that or, threaded on...
  5. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona

    That is usually a feature of a state, or area, with a strong union, because they resist anything that installs easier or faster, or is easier for the homeowner to repair/replace in the future.
  6. Ian Gills

    Ian Gills Senior Robin Hood Guy

    Jul 24, 2007
    Robber, with some DIY on the side.
    I have said it before and I will say it again. The best piece of advice I ever got from this site was to solder on good quality brass nipples and use thread-on quarter turn angle stops.

    That way I never worry about leaks or replacement.

    Not that you would worry about leaks or replacement with a properly installed compression angle stop but I am just a worrier like that. Compressions should not be used where there is any chance of movement and I always worry about bumps, particularly in my kitchen/bathroom cabinets. Obsessive and irrrational I know.

    Don't mention lawnmowers.
    Last edited: Nov 5, 2008
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