121-4009 - Miller Smith Silverline 2-Stage Inert Gas Regulator CGA 580 0-60 PSI

Consistent Flow for Perfect Welds and fabrication

When precision matters, the Miller Smith 121-40-09 Silverline Regulator delivers. Whether you are TIG welding with Argon, purging piping with Nitrogen, or running pneumatic tools in a shop, consistent pressure is key to quality results. Unlike single-stage regulators that allow output pressure to creep up as your tank gets low, this two-stage regulator maintains a rock-steady flow from the moment you crack the valve until the tank is empty. This means you can focus entirely on your work without worrying about fluctuating gas coverage affecting your weld porosity or process consistency.

Designed for the Shop Environment

Miller Smith knows that shop equipment takes a beating. That's why the Silverline series is built from solid brass bar stock and finished with a durable plating that resists grime and corrosion. The CGA 580 connection fits standard tanks for Argon, Nitrogen, and Helium mixtures. The large, 2-1/2 inch gauges are easy to read from a distance, letting you check your tank levels and line pressure at a glance. The 0-60 PSI delivery range is perfect for most shielding gas applications and low-pressure testing requirements.

Key User Benefits

Beyond stability, this regulator offers peace of mind. The Sure-Seat filtered seat protects the internal mechanisms from the microscopic dirt and shavings often found in industrial cylinders, preventing leaks and creep. The large 1-7/8 inch diaphragm gives you fine-tuned control, so when you set your pressure to 20 PSI, it stays at 20 PSI. It also features a rear-panel mount option, making it ideal for custom welding carts or fixed manifold stations. If you are looking for a regulator that combines professional-grade accuracy with industrial toughness, the Miller Smith 121-40-09 is the tool for the job.