what Is dangerous is pvc is very brittle material that can be broken or shattered with external force unless properly protected. Compressed gasses can be best described as being analogous to a coiled spring. When a PVC pipe or fitting fails when under stress from compressed gas it literally explodes like a bomb, sending shards of plastic flying several feet in all directions. Liquids, on the other hand, being compressed by only 1/10th of 1% contain very little stored energy. When pressurized systems with liquids fail, the energy is dissipated very quickly, thereby creating a much lower potential for hazard. So the question is not can it handle the job. yes it can but if you are around when it fails you may me seriously injured. thousand of air pressure systems have been installed and work fine but it only takes a few accidents to get the attention of OSHA to make the manufactures change their recommendations. let me end this dicshion with this. This topic I happen to to be very intimat with but the use of pvc for air pressure can be done and done safely. Especially the sch 80 and 120. But with that all said go out and buy a pressure chamber and use it the way it wan intended.
