Slow leak at soldered copper T on outside hose bib

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Old 10-17-17, 12:57 AM
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Slow leak at soldered copper T on outside hose bib

Hi,

Recently I noticed a slow leak at a soldered T on one of my outside hose bib. This joint was done by someone else about 10 years ago and it is 3/4" copper pipe. I have checked the other outside hose bibs and there are no leaks, just this one. I have attached two images with one marking the leak. I am not sure how to insert a photo into my post.

How do I repair this leak?

I have soldered copper before in a shop for practice but have not done it in several years so consider me a novice at soldering copper. I have searched this forum and on the internet and youtube on how to repair a leaking solder joint. A few people say that you can clean the area well, flux, heat, add more solder and hope that stop the leak.

So far, this is what I have:

1. turn off the water to the house
2. drain all water from the pipe (how do I do this? open the hose bib and all the inside faucets or just one or two inside faucets?)

Thank you very much for your time and help.
Hoang
 
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Old 10-17-17, 05:11 AM
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If you are not using that offshoot section I would remove it so you only have the hose bib. To do that I would remove the T fitting. Then remove the pipe nipple from the male threaded fitting. Then solder the male threaded fitting onto the end of the pipe coming through the wall.

Sometimes re-soldering old pipe and fittings can be difficult. The pipe and fittings must be meticulously cleaned until they are bright shiny copper. For all that trouble it's often easier to simply buy new fittings. In your case all you'd need is the male threaded adapter.
 
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Old 10-17-17, 09:13 AM
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Look at all the green corrosion on the pipe, attempting to re-solder that is not going to work. Best bet to remove the tee as PD suggested and screw on the hose bib.
 
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Old 10-17-17, 10:09 AM
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Can not solder with even a drop of water in pipe. Drain pipe all way and heat joint If it loosens pull it out. If there is a slight dripping stick a piece of bread in pipe to stop leak. After joint (s) are soldered turn water on to wash bread out.
 
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Old 10-18-17, 07:57 PM
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It is now repaired. Thank you all.

In my first attempt to remove the T, there was still water in the pipes so I could not get it hot enough. I had to open all the faucets inside the house too to drain all the water out.

Then I heated the leaking joint, remove, clean inside fitting and pipe really well. Flux and soldered back. So far no leak.

Again, thank you all very much for your time and help.

Hoang
 
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