Miller Smith 2-Gas Proportional Mixer Argon/CO2 180 CFH

Take Control of Your Arc with Precision Gas Blends

For professional welders, the quality of the shielding gas is just as critical as the voltage and wire speed. The Miller Smith 299-006-1C Gas Mixer gives you the power to utilize precise blends of Argon and CO2 without relying on whatever pre-mixed tank happens to be available. Whether you are running short-circuit MIG on thin gauge steel and need a 75/25 mix, or pushing into spray transfer on heavy plate requiring a 90/10 blend, this mixer ensures the gas reaching your nozzle is accurate and consistent. Consistent gas composition means less spatter, better penetration profiles, and a more stable arc, allowing you to focus on your technique rather than fighting your equipment.

The 180 CFH flow capacity ensures that you never starve the puddle, even when running high-deposition wires or using long cable runs. The mixer sits between your bulk gas supply (or cylinders) and your wire feeder, actively blending the two gases to your requirements. Unlike static pre-mixed cylinders which can sometimes stratify or vary from batch to batch, a proportional mixer delivers a fresh, homogenous blend every time you pull the trigger. It is an essential tool for shops that demand versatility, allowing you to switch between welding modes and material thicknesses by simply adjusting your gas setup rather than swapping out heavy cylinders.