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cheff
soldering copper

need to extend the copper tubeing for the shut off valve to the toilet, in order to tile wall. Problem is,even with the main water valve turned off, the water flow is still at a constant drip, not allowing me to heat the copper for a good weld. Have tried bread to obsorb water,but flow is to great for a weld to take place. Of course the toilet shut off valve is the lowest(elevation) of the water line, tried opening other valves to drain off water, not successful, tried bread to soak up water while soldering, flow to great before tubeing can be soldered. Force air into water line to remove excess water? Any other ideas? Thanks C

dj1
Re: soldering copper

Don't use bread - it creates clot down the line.

Your lowest point is at your water meter. Turn the main shut off valve at the meter to off position and loosen up the nut over there, just enough to let all water in the house out.

Now heat the nipple and let all the water disappear: you are ready to solder.

Go back to the meter and tighten the nut. Be careful. Turn the valve on. Done.

Can't do it? get a plumber to help you.

MLBSF
Re: soldering copper

actually it sounds like your main shutoff valve is not doing it's job. maybe the washer in it is cracked or old and breaking apart. it's just going to create a larger problem down the road if the washer totally fails. my advice would be to get a plumber to replace your shutoff valve first, then you can make your repairs.

HoustonRemodeler
Re: soldering copper

use a valve that attaches with a compression nut, like this.

johnjh2o
Re: soldering copper
HoustonRemodeler wrote:

use a valve that attaches with a compression nut, like this.

Houston I think he is trying to extend the copper and not just replace the stop. As MLBSF said he needs to replace the main valve first.

John

dj1
Re: soldering copper

Absolutely, replace the main shutoff valve while the meter is turned off, as suggested. Get the washerless kind, 1/4 turn brass ball valve w/long handle.

When you're ready to install your angle stop, you have options: compression valve, like the one Houston mentioned, sweat valve and threaded valve, for which you need to install a male adoptor on the new nipple. Don't forget to insert a copper size flange first.

bp21901
Re: soldering copper

Shark Bite union to extend the copper, no soldering necessary.

Re: soldering copper

HI
You can use tin lead solders for electrical applications. Its could be used lead free solders for plumbing applications.

Thank U

Roybldg43
Re: soldering copper
bp21901 wrote:

Shark Bite union to extend the copper, no soldering necessary.

Solved the problem with this in line shut off valve. You may have to make adjustments to your toilet supply afterwards:o

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