camner
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It's been a while since I've sweated copper pipe, and I'm running into a new (for me, anyway) problem...
I assembled the whole thing, cleaned and fluxed, and started sweating the joints. I noticed that the first joint on a fitting typically went very well, but the second one often didn't. The solder just wouldn't flow right.
I think what was happening was that the flux in the second joint of the fitting was just getting oxidized out while I was sweating the first joint.
How does one avoid that, especially on smaller joints such as couplers?
And a second question...how likely is it that a joint that passes muster when first put under pressure will fail sometime later? Can I be fairly certain that a joint passing the initial pressure test will remain good?
I assembled the whole thing, cleaned and fluxed, and started sweating the joints. I noticed that the first joint on a fitting typically went very well, but the second one often didn't. The solder just wouldn't flow right.
I think what was happening was that the flux in the second joint of the fitting was just getting oxidized out while I was sweating the first joint.
How does one avoid that, especially on smaller joints such as couplers?
And a second question...how likely is it that a joint that passes muster when first put under pressure will fail sometime later? Can I be fairly certain that a joint passing the initial pressure test will remain good?