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Thread: transitioning from galvanized to copper

  1. #1

    Default transitioning from galvanized to copper

    Gonna tear out some old galvanized and replace with copper. Cant replace it all so I 'm gonna have a 3/4"galvanized to 3/4" copper transition. Figured I'd use a 3/4" brass threaded coupler off the galvanized pipe, then a 6" brass nipple, then a copper FIP to sweat fitting and continue on with my rigid copper. Lotta connections there, but is there a better way? The existing plumbing has some dielectric unions where others have transitioned to copper but they show signs of corrosion.

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    DIY Senior Member Smooky's Avatar
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    Last edited by Smooky; 12-16-2013 at 07:57 PM.

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    Forum Admin, Expert Plumber Terry's Avatar
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    existing plumbing has some dielectric unions where others have transitioned to copper but they show signs of corrosion.
    I would not bother installing dilectric unions. They close off very quickly.
    Junk.
    I've been using 6" brass nipples for transistion.
    It's also one reason I don't like leaving any galvanized in a building once I've started replacing with copper. Any time you transistion, it's a probem.

  4. #4

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    Thanks Terry, Unfortunately I don't have the option of removing all the galvanized in this situation.

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