I have two outdoor faucets that are leaking.

I am in Phoenix, AZ (very hard water) and wanted to change out the existing brass fittings for ball valves.

I am having a hard time unsweating the brass from the copper. I've read through many posts on this site looking for answers, but nothing seems to help.

I have turned off the water at the main, drained the plumbing lines and heated the brass fitting with MAPP gas for a good five minutes. I try to twist the fitting off, but it won't budge. I am afraid of twisting too hard b/c I don't want to damage the copper pipe behind the wall.

There is a bit of water in the pipe. Would that cause the fitting to not sweat off? It's probably been on there for years and years.

Any suggestions?

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