Pex tubing retrofit for DIY project?

[LeeW]

Hi LazyPup - just wanted to give you a follow-up.

Spoke to the State of CT building code inspector about obtaining a variance for stainless piping, and it turns out that they use the International Plumbing Code, which already allows stainless steel for all potable water applications.

[dbsmith]

Hi there. I had an additional question about Pex plumbing. I am trying to install a sink in a bar and my route to get there is difficult. I found PEX plumbing and using a flexible pipe would be incredible. My question is this; can I join PEX tubing to existing cpvc plumbing? Ideally I would go from the sink with the PEX, up the wall, across the ceiling and across to the existing plumbing.
Thanks for any help!