Posted by R.P.Hurley on July 01, 2004 at 17:26:52:
Can you explain electrolysis to me in layman's terms. I arrived home recently, after a short vacation and discovered my basement filling with water from a hole in a galvanized union. This was the same pipe that failed about 2 years ago. At that time it had been repaired by a different plumber. The plumber I called to fix it the second time told me that the first plumber connected copper pipe to a galvanized union without using a dielectric union.

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