In regards to the copper/pvc air line discussion. It always seems be a
heated topic. In a couple quick searches to industry sources, I found the
following:
On page 9 in the following booklet.
http://www.copper.org/publications/pub_list/pdf/copper_tube_handbook.pdf
"Compressed AirbUse copper tube of Types K, L or M determined by the rated
internal working pressures as shown in Table 3. Brazed joints are
recommended."
In regards to PVC, in this manual:
http://www.charlottepipe.com/Documents/PL_Tech_Man/Charlotte_Plastics_Tech_Ma
nual.pdf
Under this section: SUBMITTAL FOR CHARLOTTE PIPEB. PVC SCHEDULE 40 PRESSURE
PIPE AND FITTING SYSTEM
You see the following:
WARNING! Never test with or transport/store compressed air or gas in PVC
pipe or fittings. Doing so can result in explosive failures and cause
severe injury or death.
On a different but similar situation, I find it interesting that PVC pipe
is commonly used to vent flue gas from boilers and water heaters etc, yet
no where will you find a manufacturer of PVC pipe who rates their pipe for
that application.
Joe
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