[Thomas Dean]

Any welding supply will tell you DO NOT LAY ON THE SIDE. They will not allow you to lay one on the side at their store. For those that insist on laying an act. bottle on the side you need to let the liquid settle for at least 24 hours, longer is better, or you will have an oily residue coming from you torch...not good. Oxygen and other gas bottle are no problem to lay on their sides. Years ago it was not uncommon to have to lay a mixed gas bottle on the floor and roll it around to remix the gases due to settling during extended periods of nonuse. Also it is AGAINST THE LAW to transport any bottle inside of a car or other vehicle, no matter the kind of gas.