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Old 04-03-2008, 09:47 AM   #1
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removing copper caps


I had pipes burst during the winter in my barn. So, I sweated a cap onto the existing pipe untill a better time came when I could do the repairs. Now that I am ready, I don't have enough of the existing pipe to cut below the cap. My plan is to remove the cap from the existing pipe. Can this be done? I am heating the cap and trying to pull it off, but it is a little bit stubborn and not coming off. And then I was thinking if I can couple to that end once the cap is off?

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Old 04-03-2008, 09:55 AM   #2
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removing copper caps


Drill a hole in the end of the cap. There may be water laying in it that's sucking away all of your heat. After you unsolder the cap you should be able to sweat on another fitting.

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Old 04-03-2008, 11:24 AM   #3
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removing copper caps


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Originally Posted by Maintenance 6 View Post
Drill a hole in the end of the cap. There may be water laying in it that's sucking away all of your heat. After you unsolder the cap you should be able to sweat on another fitting.
Exactly. Drill the hole near the bottom of the cap.
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Old 04-05-2008, 10:56 AM   #4
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removing copper caps


Try putting a screw (sheetrock type) in the hole. As you heat the cap, take a pliers and pull it off with the screw. It'll keep the cap from squishing the pipe and cause more problems.
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Old 04-07-2008, 10:05 PM   #5
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removing copper caps


The other possibility is that you're overheating it.... the pipe is expanding inside the fitting and it's too tight to pull off..... You can tell if you're up to temp by brushing a little flux on it..... if it sizzles, you're plenty hot, if not you may be having the water issue as described above. Can't you just cut it?
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