620-00060000 - Miller Smith 620 Silverline High Purity 2-Stage Regulator CGA 350 0-25 PSI

Precision High Purity Gas Control

The Miller Smith 620-00-06-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for applications demanding the utmost precision and gas purity. Designed specifically for non-corrosive specialty gases, this regulator features a robust nickel-plated brass bar stock body and a 316 stainless steel diaphragm. The metal-to-metal seal between the body and diaphragm eliminates the need for elastomeric seals in the gas stream, significantly reducing the risk of contamination and outgassing. This construction makes the 620 Series an excellent choice for analytical laboratories, chromatography, and other sensitive industrial processes.

Two-Stage Stability

As a two-stage regulator, the 620 Series excels in maintaining a constant delivery pressure regardless of fluctuations in the inlet pressure. As a gas cylinder empties, the pressure drops, which can cause single-stage regulators to drift. The two-stage mechanism compensates for this, ensuring a steady 0-25 PSI output throughout the life of the cylinder. This stability is critical for calibration gases and continuous flow applications where consistency is paramount. The unit is rated for a maximum inlet pressure of 3500 PSI and connects via a CGA 350 fitting, suitable for gases such as Hydrogen, Methane, and Carbon Monoxide.

Safety and Versatility

Safety is integrated into the design with capturable vent ports (1/16" FNPT) on the bonnet, allowing hazardous gases to be piped away in the event of a diaphragm failure. The regulator is also designed to withstand internal vacuums, making it compatible with purge cycles essential for maintaining system purity. With threaded front and rear bonnets, the regulator is panel-mount ready, offering flexibility for installation in gas cabinets or benchtop setups. The included 2-1/2 inch gauge provides clear, easy-to-read pressure monitoring, ensuring operators can verify system status at a glance.