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Discussion Starter · #1 ·
I have a small plumbing project coming up and will be replacing globe valves with ball valves. The ball valves will be soldered into 1/2" copper tubing. I've never soldered a ball valve before but I've heard some say open the valve half way and some say open the valve all the way when you solder a ball valve. My question is which is better? Or doesn't it really matter? What is the correct way to solder a ball valve? :trink39:
 

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As long as the valve is open while you solder it in place it will not build pressure from the heat and prevent the solder from entering & sealing the joint.. The reason for 1/2 open is for working clearance to the valve's open flange.. :fing32:
 

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A lot depends on how well you can solder (fast) but still have 95%+ coverage. I do it daily and just close them and then just crack it back a little, and cool the valve as fast as I can. Over heating the valve can cause the plastic seat to melt, which makes it useless. The most important things are 1) remove water 2) clean the copper 3) proper flux and solder.
If all else fails use compression ball valves, which we do sometimes due to time limits, water issues. :fing32:
 

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Remeber the old timers trick of a piece of white bread up in the pipe to absorb any water--if doing a job quickly?

Again--clean and prepare is the key--

Also--glad to see you post again--Mr. Cadman!!:thThumbsU


glenn
 

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Remeber the old timers trick of a piece of white bread up in the pipe to absorb any water--if doing a job quickly?

Again--clean and prepare is the key--

Also--glad to see you post again--Mr. Cadman!!:thThumbsU


glenn
Funny you should say that, P.S. it does work (most of the time)

I remember a job years ago that just wouldn't drain out, just when things were right for solder water would hit :banghead3
I asked the woman of the house for a piece of bread to do what you said, she looked at me and said,
O'dear I can make you a whole sandwich!

once I explained why I needed it she said ok and gave us the bread, about hour later she brought us down some home made cookies :fing32:
 

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Discussion Starter · #7 ·
Thanks guys for all the replies. I've soldered copper fittings and globe valves before but never a ball valve. I'll do as you have suggested. I was all set up to do this job next weekend but was informed yesterday that we will be getting company next weekend so I'll have to postpone the job for another week or so. Thanks again everyone. :trink39:
 

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I have followed a guy that used the bread trick, and it worked fine for him, but I then spent time cleaning it out of toilet fluch valves and ice machines. :)
The hottest thing on the market is Shark-Bite fittings that just slip on to copper, pex, cpvc, etc, and come in valves, couplings, els, tees, etc and can be install without tools and in wet conditions. I love them if price is not the issue and time is.
 

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Discussion Starter · #9 ·
Yea, I heard with bread you should remove the strainers on your faucets and run the water for a while to flush out the bread. I'm not sure but I thought I read or saw somewhere, they have gel balls that fit into copper tubing. You put one of these in the tube and shove it back away from the solder joint. These things would hold the water back while you soldered. Once water pressure hit them they would explode and the gel would dissolve. Anyone ever heard of these things?
 

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Some ball valves will blow up if not in the half way mark when applying heat.
Air can get trapped between the ball and the valve caseing...
I opened new ball valves not hooked to anything that sat in the sun.
They make a loud popping noise when you open them for the first time.
 
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