I'm preparing to connect new 1” Pex water line from well to 20 yr old house, that is also Pex piping. I plan to either use copper crimp rings or shark bite clamp fittings. My question is, could there be brittleness & leak issues when I compress the rings around the older Pex tubing?
The life span of Pex can be as much as 40 years. When you make the connection to the old tubing, I would use a Sharkbite fitting at that point instead of crimping. You won't use near the pressure and they hold really well.