... 2.control delivery pressure only 1.The primary function of regulator is to reduce the high pressure gas in cylinder ... .2.A regulator is not a flow control device. It is used to control delivery pressure only.3. ... Brass, Stainless steel, Chrome plated regulators.5.We provide regulator for various gases like Oxygen, Acetylene, LPG, Nitrogen, ... dot cn if have questions. oxygen gas pressure regulator