Attaching RODI to PEX plumbing

[Ryanerickson]

By the way if you use a compression fitting anywhere with the plastic John guess pipe you need a metal sleave inside the pipe or it will let go at some point and flood your house. It's a little 3/4 inch long brass looking piece that slides inside pipe so when you tighten fitting it does not just crush the pipe.

[mike31154]

Sharkbite connection should work, you just need to find an adapter to step down the size to the small diameter RODI tubing. I have copper, not PEX, but the photo below should give an idea of what's possible. I found a push type step down fitting at Can Tire. I'd say most stores dealing in plumbing fittings should have something similar.

You definitely want to include a shut off valve so that the RODI isn't under constant pressure.



EDIT: Was responding while you posted the last photo of the metal fitting, looks like that should work just great.