PVC air lines

[Torque1st]

Stuart
I have a pal who is an engineer- does work in building trades. Specailty is pipe and plumbing. He is a good source
I read your post and he is off the opinion that you are correct when it comes to PVC but the CPVC which is used for acid and rates to 220 psi would be ideal to use. It seem the issue from his view is the oil from most compressors splashes up and is pumped thru the lines and this is the issue that weakens them to the burst level
Pressure is not an issue nor is water which is their purpose.
I am ready to do my shop- I wondered if you had any expertise in piping to offer an opposing view?
Thanks good stuff on the forum

Even Schedule 80 CPVC is not good for compressed air service. This is the warning from just one manufacturer, others are similar. It is the material, not oil, that is the problem.

NOT FOR USE WITH
COMPRESSED AIR OR GASES
Spears® Manufacturing Company DOES NOT
RECOMMEND the use of thermoplastic
piping products for systems to transport or
store compressed air or gases, or the testing of
thermoplastic piping systems with compressed
air or gases in above and below ground locations.
The use of our product in compressed air or
gas systems automatically voids any warranty
for such products, and its use against our
recommendation is entirely the responsibility
and liability of the installer.

 

[Stuart in MN]

What Torque1st said. PVC, CPVC, it doesn't matter - it's not designed for use with compressed gases.

 

[wantedabiggergarage]

Stuart
I have a pal who is an engineer- does work in building trades. Specailty is pipe and plumbing. He is a good source
I read your post and he is off the opinion that you are correct when it comes to PVC but the CPVC which is used for acid and rates to 220 psi would be ideal to use. It seem the issue from his view is the oil from most compressors splashes up and is pumped thru the lines and this is the issue that weakens them to the burst level
Pressure is not an issue nor is water which is their purpose.
I am ready to do my shop- I wondered if you had any expertise in piping to offer an opposing view?
Thanks good stuff on the forum

There are TWO forms of plastic, that CAN be used for air. One is Pex-al-pex, the other, is a type of ABS, that is COLOR CODED to show ratings for air. One BRAND name is duraplus (not sure if they are still in business).
Most find, it isn't cost effective to use these.