Originally Posted by
cstone
I know the M12 expander is expensive, but it would be totally worth it if I never had to pay a plumber again. I keep checking pawn shops for one, but so far no luck. PEX A seems like it can't be installed incorrectly. Nothing will fit together unless you expand the tube properly, and then it spends the rest of it's life trying to get back to its original size. I'm thinking that I will initially put push to fit connections on my transitions as those will be in visible and easily accessible locations. As I have time, I can sweat fit transitions to PEX fittings or just run PEX all the way. I will be replacing 70 year old 1/2" copper, so setting up hot and cold manifolds in the basement with one hot and cold line run to each bathroom, the kitchen, and laundry. T's or three ways in those rooms to the final cut off valve at each fixture.
