Miller Smith 320 Series High Purity Stainless Steel Regulator, CGA 580, 2-Stage, 0-25 PSI

Reliable Gas Control for Critical Welding and Lab Work

When your work demands absolute precision and cleanliness, the Miller Smith 320 Series Stainless Steel Regulator is the professional's choice. While standard brass regulators are sufficient for general MIG or TIG welding, they fall short when dealing with high-purity gases or corrosive environments often found in research labs, aerospace welding, or semiconductor manufacturing. This regulator is built to handle CGA 580 gases—typically Argon, Nitrogen, and Helium—ensuring that the gas reaching your process is as pure as the gas in the cylinder.

Why Choose Stainless Steel?

In standard welding environments, moisture and atmospheric contaminants can react with brass components over time. However, the 316 stainless steel construction of the Miller Smith 320 prevents corrosion and oxidation. This is particularly important if you are using the regulator in a corrosive atmosphere or if the equipment is exposed to harsh chemicals. The stainless steel diaphragm also prevents the "off-gassing" associated with rubber diaphragms, ensuring that your shielding gas remains uncontaminated for critical welds on titanium or high-grade alloys.

Stable Pressure All Day Long

This is a two-stage regulator, meaning it does the heavy lifting of pressure reduction in two steps. For a welder or technician, this translates to "set it and forget it" convenience. You won't need to constantly adjust your flow or pressure settings as your tank gets low. The regulator maintains a rock-steady 25 PSI (adjustable range) from a full tank down to an empty one. The large, 2-1/2 inch gauges are easy to read from a distance, allowing you to monitor tank levels and line pressure at a glance.

Built for Safety and Longevity

Miller Smith has integrated key safety features, including captured vent ports that allow you to vent gases safely if necessary. The regulator is also designed to be panel-mounted if you are building a custom gas distribution board. With a max inlet pressure rating of 3500 PSI, it is compatible with modern high-pressure cylinders. Whether you are setting up a TIG purge station, a laboratory analyzer, or a specialized manufacturing process, this regulator delivers the reliability and performance associated with the Miller True Blue warranty.