Is it ok to install PEX in crawlspace. If so I would imagine it too needed to be insulated and properly supported. Anybody have any good product literature on proper install. Searched the web but it was vague. 
As Larry alluded to (albeit indirectly and in an instructional manner ),
Short answer; it’s fine in a crawspace…
I’m surprised that the companies that specialize in replacing old galvanized pipes haven’t started to use PEX. Just a matter of time.
One of the nice things about PEX is that it can expand with freezing, but has a memory and shrinks back to original size when thawed. Way less prone to breaking than copper.
Excellent, thank you very much for the info. Have a good weekend.
Kind of like me when I eat a great steak dinner uh, I exand then shrink back to size later, 
Memory Gut,
Thanks for the weblink…