<VV> NEW TYPE SHOP AIR PLUMBING copper=good

[Frank DuVal]

Ordinary copper water pipe (tubing) is great for compressed air. For 
those who want the skinny from the CDA (Copper Development Association) 
download their handbook from:   
http://www.copper.org/resources/pub_list/pdf/copper_tube_handbook.pdf

Interesting to note that even common type M is higher rated than we need 
for compressed air use (table 3c). The limiting factor is found in table 
4, the strength of joints. 50/50 Tin Lead is the weakest, rated at only 
200 psi @ 100 degrees F. Common lead free solder will give you 500 psi @ 
200 degrees F. That should be good enough for most shops!. Brazing the 
joints gives the same rating as the annealed pipe charts.

ACR tubing is waay above our needs, and harder to find at the big box 
stores.

Frank DuVal

Dave Keillor wrote:

>IIRC, it's Teflon tubing.  No way I'd use ordinary PVC or copper water
>pipe.  I'm planning to use the Rapid Air stuff to plumb my new
>compressor.  It looks a lot easier than threaded pipe.
>
>Dave Keillor
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