Basically, direct gas cannot be used due to very high pressure. This gas enters the regulator and its pressure is controlled by this tool and the amount of gas reaches the level that is suitable for the device. Its function is such that it is used to check and control the pressure, and it is not generally used to control the gas flow, but there are special regulators that, in addition to the pressure control gauge at the outlet, also have a flow control tool on them. Regulators are generally made of three types of materials: brass, chrome and stainless steel.
