An Argon flow regulator (gas-type) is used in welding to reduce the high pressure of argon gas from a cylinder to a low, usable, and consistent flow rate (typically 15-25 CFH) for TIG (GTAW) and MIG (GMAW) welding. It ensures a steady, inert shielding environment that protects the molten weld pool from oxidation and atmospheric contamination (oxygen/nitrogen), resulting in cleaner, stronger