The LOTOS AR03 Argon CO2 flow meter welding gas gauge regulator is designed to control shielding gas flow for MIG and TIG welding applications. It is compatible with LOTOS MIG140, MIG175, TIG200, TIG200ACDCP, TIG220ACDCP, CT520D brown model, and LTPDC2000D brown model welders and multi process cutters. Built with a solid brass body, this regulator offers corrosion resistance and reliable gas pressure control. The integrated flow meter and pressure gauge allow operators to monitor and adjust argon or argon CO2 gas delivery to the torch assembly. Featuring a standard CGA 580 inlet fitting, it connects directly to shielding gas tanks for simple setup and stable operation during metal fabrication projects.