I have a 3/4" Cu pipe carrying return water in my baseboard heating
system. It is install in a channel in the slab floor. I have exposed
about 4" of length and am pondering sawing the pipe. But there is no
room to sand it all the way around. There is only about 1/2" of space.
Can anyone tell me how to get the pipe prepared for soldering? TIA
Not nearly enough info, but you could make a loop of
"sandpaper" out of maybe a 2" wide strip.
Form the loop so that it looks like a "U" and slip
one end under the pipe. Work the sandpaper up and down.
If not that, then you'll have to make a better picture
of what you're doing.
No, just loop the Emery cloth around the pipe and turn it. ou
should be able to do this with 1/16" space. The issue is how to
heat it without torching the place. The carbon-fiber pads work,
th9ugh not as well as asbestos. You might try putting so aluminum
flashing behind carbon fiber pads.
Probably why yours don't leak at the onset or a week/month(s) later.
Sounds like a quick digital pic of your situation will get you some
useful input. Pic=1k words. Upload it here http://tinypic.comand post
the link it gives you.
Good suggestion, Al. I'll try to do that later on today. My leak
wasn't caused by a poor solder joint -- I actually failed to solder a
coupler in a long run. It was just stuck together and drips about one
or two drops a day. I'm toying with the idea a trying to solder it in
place after draining the run, but I doubt there is any flux still in the
joint. It's probably best to cut out a section and install a pair of
repair couplers, all properly prepared.
Hear a possibility would not hurt to try might save you a lot of work
Go buy a piece of 3/4" copper tube the outside diameter is 3/4" should fit
inside the 3/4 pipe. Basically your making an inside coupling. I don't think
that will effect your return flow.
Loop your emery cloth around the pipe. You should be able to easily
polish about 1/2 (the bottom and some of the sides) the cylinder with the
loop held straight up and down. Now move the loop out of the vertical and
you should be able to polish more of one side. Repeat by moving the loop
appropriately until the sides are on pretty good shape. A finger or a
Popsicle stick can supply the pressure to shine up the top.
After reading more of your post a picture would help. But you might also try
heating the pipe ( after drained) then applying flux while hot then
re-solider the joint, I've fixed a lot of leaks that way.
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