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Jan26-10, 07:47 PM
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Quote Quote by turbo-1 View Post
I suggest that instead of additional insulation, you consider wrapping that section of pipe with a thermostatically-controlled heat strip.
When I did a little modification of my incoming water line, I noticed that the copper line was really starting to get deteriorated for being too warm. The heat tape was wrapped without any space between the wraps. I replaced the copper and heat tape but this time with a shorter one that just runs parallel to the pipe that was suggested by the installation instructions. I should have know this since when I was working at a chemical plant, we would make heat tape runs of hundreds of feet parallel to the lines.

In short, too much heat can be bad.