621-00060000 - Miller Smith Silverline 620 Series High Purity 2-Stage Regulator CGA 350

Precision Control for Specialty Gases

The Miller Smith 621-00-06-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for environments where precision and purity are non-negotiable. Designed specifically for non-corrosive gases such as Hydrogen, Methane, and Carbon Monoxide (utilizing the CGA 350 connection), this regulator is a staple in laboratory and high-tech industrial settings. The Silverline 620 Series distinguishes itself with a robust two-stage architecture. Unlike single-stage counterparts, this unit reduces pressure in two steps, ensuring that the delivery pressure remains constant even as the inlet pressure decays from a full cylinder. This feature is critical for analytical applications where pressure drift can compromise results.

High Purity Construction

Contamination is the enemy of specialty gas delivery. This regulator addresses that risk with a specially designed stainless steel diaphragm. The diaphragm provides a metal-to-metal seal against the body, eliminating the need for elastomeric seals that can outgas or degrade over time. This construction ensures that the gas stream remains pure from the cylinder to the application. Additionally, the seat is filtered with a 316 stainless steel filter, providing an extra layer of protection against particulate contamination that could damage the seat or downstream equipment.

Safety and Versatility

Safety is paramount when handling combustible gases like Hydrogen. The Miller Smith 621-00-06-00-00 features a capturable vent in the bonnet (1/16" FNPT). In the unlikely event of a diaphragm failure, this port allows hazardous gases to be piped away to a safe ventilation system, rather than venting into the immediate workspace. The nickel-plated brass bar stock body provides excellent durability and resistance to environmental corrosion, while the threaded front and rear bonnet allow for secure panel mounting if required. With a delivery range of 0-60 PSI and a maximum inlet of 3500 PSI, this regulator is a versatile tool for precise gas management.