Miller Smith 620 Series Silverline High Purity 2-Stage Regulator CGA 580

Reliable Gas Delivery for Critical Welds and Labs

When your work requires absolute consistency, the Miller Smith 623-00-09-00-00 Silverline Regulator delivers. Designed for welders, fabricators, and lab technicians who work with high-purity inert gases like Argon and Nitrogen, this two-stage regulator takes the guesswork out of pressure control. If you have ever struggled with your gas flow changing as your tank gets low, you know the value of a two-stage system. This unit maintains your set delivery pressure—up to 250 PSI—steady from a full tank all the way down to empty, ensuring your process remains stable without constant adjustment.

Durability meets precision in the Silverline series. The body is machined from brass and nickel-plated, giving it a tough, easy-to-clean finish that stands up to shop environments while maintaining the cleanliness required for laboratory settings. Inside, a stainless steel diaphragm replaces the standard rubber components found in cheaper regulators. This means you get a more sensitive response to pressure changes and a longer lifespan, as there is no rubber to dry out or crack over time. The 2-1/2 inch gauge is easy to read, allowing for quick checks of your settings.

This regulator is equipped with a CGA 580 inlet, fitting standard tanks for Argon, Nitrogen, and Helium. It is an ideal choice for TIG welding applications where shield gas purity is critical, as well as for purging piping systems or pressurizing components for leak testing. The 1/4" FNPT outlet allows for versatile connection options to your hose or flow system. With a max inlet rating of 3500 PSI, it handles high-pressure cylinders with ease. Invest in the Miller Smith Silverline for a regulator that performs as professionally as you do.