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. I did a quick search and apparently with (rigid) copper plumping pipe, there is a Schedule 40 and a Schedule 80. All I know is that the different numbers relate to wall thickness. 80 is thicker. Outside dimensions are the same. So I don't know enough to be really smart though. I think we...

. Vibration is the killer for the copper lines. That problem is exacerbated if there are loose supports for those copper lines. Where somebody removed a support and the tubing flops around and that sets up a failure. I am not an expert, but if you use your house for an example: The copper...