622-20060000 - Miller Smith Silverline 2-Stage High Purity Regulator, CGA 350, 0-100 PSI

High Purity Precision for Specialty Gases

The Miller Smith 622-20-06-00-00 Silverline High Purity Brass Two Stage Regulator is an advanced gas control device engineered for applications demanding the highest levels of stream purity and pressure stability. Part of the renowned 620 Silverline Series, this regulator is specifically designed for non-corrosive gases such as Hydrogen and Methane, utilizing a CGA 350 inlet connection. The unit features a robust two-stage design, which is critical for maintaining a constant delivery pressure of 0-100 PSIG even as the cylinder pressure decays from a maximum of 3500 PSIG. This eliminates the need for frequent manual adjustments during operation, ensuring process consistency.

At the core of this regulator's performance is its stainless steel diaphragm. Unlike elastomeric diaphragms that can off-gas or absorb contaminants, the stainless steel construction ensures that the gas stream remains pure. The diaphragm utilizes a metal-to-metal seal with the body, providing a leak-tight integrity that is essential for handling flammable or specialty gases. The body itself is machined from brass bar stock and finished with nickel plating, offering a clean, durable surface that resists environmental corrosion while maintaining the economic advantages of brass over solid stainless steel bodies.

Safety and longevity are paramount in the 622-20-06-00-00 design. The regulator includes a capturable vent in the bonnet (1/16" FNPT), allowing users to pipe vented gases away to a safe location—a crucial feature when working with combustible gases like Hydrogen. Additionally, the seat assembly is protected by a 10-micron 316 stainless steel filter, which prevents particulate contamination from damaging the seating surface, thereby extending the service life of the regulator. With 2-1/2 inch single scale gauges, operators can easily monitor both inlet and delivery pressures with precision.