Compressed Gases Most of us know what the various compressed gas cylinders are used for on the job, but how many of us realize that the gases stored in those cylinders are under pressure of from 250 psi to 2200 psi? These pressures make the cylinders not only dangerous from a fire standpoint but if not handled and stored properly, you are looking at a bomb or a rocket. Today we want to talk about the safe use of compressed gas cylinders. Guide for Discussion Always store compressed gas cylinders in a secure upright position. Always store with caps over the valves. ...