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02-05-2019, 02:13 PM
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#11 |
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The future is unwritten
Join Date: Oct 2002
Posts: 71,105
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I've handled over 100,000 feet of that 1/2 inch copper and never seen those plugs. The only copper I've seen sealed is refrigeration tubing, so I don't think it's a clean thing. Maybe to keep the end from getting ovaled if somebody steps on it, or with all the new solderless fittings, to keep the ends from being chewed up and scratched.
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The descent of man ~ Nixon, Friedman, Reagan, Trump. |
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