Gas pressure reducers for argon, carbon dioxide, and non heating (MIG/MAG welding). Argon pressure reducers are essential for regulating, maintaining, and generating the pressure required by cylinders during welding. Two pressure gauges are responsible for controlling the pressure at the inlet and working pressure chamber. This pressure gauge is installed on the cylinder for subsequent supply of gas to the welding torch. It is used together with MIG/MAG welding machines.