Taking the PEX plunge

[NM_Shooter]

I have read that if you use PEX, it is different from copper as erosion is not an issue.  You should size it such that you keep flow rates at 10ft/sec or more in order to keep biofilm from forming in the PEX.  Faster flow is bad for copper, good for PEX.

[glenn kangiser]

Could be a good idea, but I didn't get technical with mine.  I just brought a 3/4 to a manifold and 1/2 off of that to everything - mostly home runs to the manifold, because that is what my supplier suggested.

Copper in our highly mineralized aoil only lasts a few years then gets eaten through-- possibly sleeves could save it but not worth a chance.