On Wed, 23 Nov 2011 10:35:00 -0600, "David Courtney"
wrote:

"Ralph E Lindberg" wrote in message news:n7bsn-
I like the idea several have posted using PEX. There is also a PVC
designed and rated for air
http://www.aetnaplastics.com/product...roPipingSystem


NorthernTool is selling a "RapidAir" air distribution set with 1/2"
nylon lines and push-to-connect fittings for well below the "list" price...
it actually looks like it's priced cheap for what you get; but a person
could piece together their own set-up, too.
http://www.northerntool.com/shop/too...7525_200367525
There must be a cheaper knock-off from HF also, according to RapidAir's
website "Please be aware that Harbor Freight has copied the Rapidair system.
This is not our product in their stores. We have had numerous phone calls
about the poor quality of this system."
http://www.rapidairproducts.com/rapidair.asp


PEX is their way of trademarking XLPE - Crosslinked Polyethylene,
perhaps with a Nylon scuff layer on the outside. They are using it
for the chassis air brake hoses on new heavy trucks, so they've got to
be fairly confident in it's reliability...

But that truck stuff is also colored different so it has a little UV
resistance - I wouldn't just toss up plumbing grade PEX pipe.

-- Bruce --