... function reduce the high pressure gas in cylinder or process line to a lower 2.control ... is to reduce the high pressure gas in cylinder or process line to a lower, usable level ... as its passes from cylinder to a piece of equipment.2.A regulator ... Oxygen, Acetylene, LPG, Nitrogen, Hrydrogen, Zero Air, Argon, Carbon dioxide, Helium, Nitrous, Clorine, Amonia, Medical oxygen. We also ...