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gone_fishing 01-19-2008 12:00 PM

How to solder a pipe that is dripping
I needed to cap off a line so I can continue my demo. Shut the water off but it was the lowest point in the house so it kept dripping. I am sure there are other ways but here is my wife's idea...we took a hanger and a strip of t-shirt. I used the hanger to push the material into the pipe about 18". I then got the pipe ready with flux, turned on my torch and pulled the hanger and shirt out. I soldered quickly so it wouldn't get water near the connection. Worked beautifully! I did use a strip of tshirt and kept some in my hand so it wouldn't get stuck.

space_coyote 01-19-2008 12:08 PM

I've "heard" that you can use a wad of bread to do the same thing -- breaks up naturally eventually (but it will clog up your aerator on your faucets thinking you did something terribly wrong...ask me how I know :) ).

concretemasonry 01-19-2008 12:11 PM

White bread (no crusts) stuffed into the line will also stop the water long enough for it to be soldered.

The bread then will dissolve or break down enough to go out through the outlets without clogging screens.

gone_fishing 01-19-2008 12:18 PM

I thought about the bread but didn't do this because:

1) No white bread in the house
2) Worried about it being in the water supply somewhere.

Fitter 01-19-2008 06:37 PM

Don't know it you're tieing back into the capped
line, but another option would be to sweat a thread/sweat fitting on.(ex. male / female adapter)
That way you can still pull the rag out of the line and then screw on a cap or plug.

It also helps when soldering so you won't build up pressure and blow the solder out of the joint.

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