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Author:
sum (FL)
Trying to take apart the supply lines to run the pipe outside the wall where I already had the holes drilled as shown in the pic.
not sure what type of fitting on the lower left. Looks like a compression coupling?
I am inclined to take that apart and replace it with a regular coupling. But all the joints are soldered except this one makes me wonder if there is a good reason this fitting is used here? There is green stain above and below it is this from flux?
Edited 1 times.
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Author:
packy (MA)
that's a compression fitting the same as the shut off has.
possibly the water didn't shut off all the way so the plumber used one of those.
a soldered coupling would be the best for that. unscrew it with 2 wrenches to determine if there is a shut off not holding. if you replace the fitting it is ok to leave the bottom nut and ferule there. just grease it up and tighten on a new compression union.
or, cut the pipe below it, shop vac out the water and solder on a coupling. if you have real trouble just use a new compression union.
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Author:
sum (FL)
Packy I have already replaced the old stuck rusted shutoff with a new full port ball valve so I know it will shutoff.
I will try a solder a coupling there. I am worried the pipe is out of round and there is a very short piece to work with.
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Author:
packy (MA)
if it were out of round, the compression union would not have sealed.
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Author:
steve (CA)
If you remove the existing coupling, you could sweat a slip coupling over the dent and then resweat the removed pieces.
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Author:
packy (MA)
or, you could cut the copper at the bottom of that dent, use a swaging tool to make the male end of the copper into a female end, clean the inside of that female end really, really well, flux it up and insert a piece of tubing into it. you will have a nice upright joint to solder...
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