300491 - Miller Plasma Air Filter and Dryer Kit 300491

Protect Your Plasma Cutter and Extend Consumable Life

Moisture is the enemy of plasma cutting. If you are tired of burning through electrodes and nozzles faster than expected, the Miller RTI Filter/Air Dryer Kit (300491) is the solution you need. Wet or dirty air not only ruins your consumables but can also damage the internal components of your plasma machine. This high-performance filter kit acts as a firewall for your air supply, stripping out 99.9% of water, oil, and dirt down to a single micron. The result? Your plasma torch runs cooler, your consumables last significantly longer, and your cuts are cleaner and more precise.

Complete Kit for Easy Setup

Welders Supply brings you this complete filtration package ready to install right out of the box. You don't need to hunt for extra fittings or brackets; the Miller 300491 kit includes a universal mounting bracket, a 12-inch connecting hose, and all the necessary hardware to mount it directly to your machine or a nearby wall. It is specifically designed to fit seamlessly with Miller Spectrum series plasma cutters but features standard 1/4-inch NPT connections to work with most air supply setups. The compact size (6.3" x 2.5") ensures it doesn't get in the way of your operations.

Built for the Shop Environment

Forget about fragile plastic filters that crack under pressure. This Miller unit features a rugged metal bowl designed to withstand the bumps and knocks of a busy welding shop. The integrated sight glass lets you check the filter status instantly, while the automatic drain takes care of moisture buildup so you can focus on cutting metal, not draining filters. Whether you are a professional fabricator or a serious hobbyist, adding this air dryer to your setup is an investment that pays for itself in consumable savings alone. Get the best performance out of your plasma cutter with clean, dry air.