Can copper fittings be un-soldered & replaced?
We are renovating one of our two existing bathrooms. While the walls are open, we are also providing plumbing for a new basement bath.
The existing cold water supply starts with 3/4" copper. A 3/4" x 3/4" x 1/2" tee then provides water to the kitchen and laundry in one direction (3/4") and the two baths in the other direction (1/2"). The hot water supply is similar except that the tee reduces to 1/2" in both directions.
Figuring that the 1/2" lines to the existing bathrooms is not adequate to supply three bathrooms, I have upgraded the main lines to 3/4", with 1/2" branches to individual fixtures. I'm now ready to tie the new lines back into the old.
Question: Is it acceptable to un-solder the existing copper tees and replace them with new tees?