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Author:
CarolPeaches (CA)
How do we do a hot water flush of our cold water lines.
We just had a failure of a coupling in a cold water line.
The guy tried to convince us it was corrosion from the copper but my husband has done enough welding that he could tell it was flux not corrosion. We installed type L but later found out that couples are not made of type L but look more like type M.
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Author:
packy (MA)
before you go claiming that too much flux was used, you need to find out how much is 'too much'..
i have been soldering copper tubing since the early 60's and i have never heard of this..
flushing the pipes with cold water is sometimes the best you can do.
unless you have a micrometer, how can you tell the wall thickness of fittings? i can't...
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Author:
Pipe runner (AZ)
I personally think you are worrying about nothing. The flux that was used was probably water soluble and if any got pushed past the fitting when assembling it wont' be much and will quickly wash out. Maybe just hold off on drinking the water in that line for awhile.
If you are referring to the corrosion around the fitting after the work was done? well then he got sloppy and did not wipe off his finished joint and YES the flux will corrode the pipe and turn it green.
Edited 1 times.
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Author:
hj (AZ)
1. Any "excess" flux is evaporated/boiled off when the joint is made
2. If there is any 'residual flux" it is flushed out as soon as the water is turned on
3. ALL copper fittings are the same "grade" and it is NOT "M", "L", or "K". YOu do NOT have a choice of grade for fittings, and if your husband has worked with copper as much as you state, he WOULD know that.
4. It appears you will keep posting this until you get an answer that agrees with you.
Edited 1 times.
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