621-83090000 - Miller Smith 620 Series Silverline High Purity 2-Stage Regulator, CGA 580

High Purity Precision for Specialty Gases

The Miller Smith 621-83-09-00-00 is a premium offering from the 620 Silverline Series, engineered specifically for non-corrosive specialty gas applications requiring exacting standards of purity and pressure stability. As a two-stage regulator, it excels in maintaining a constant delivery pressure regardless of fluctuations in the inlet pressure, a critical feature for analytical laboratories, chromatography, and high-precision manufacturing processes where flow consistency is paramount.

Advanced Material Construction

At the core of this regulator's performance is its unique stainless steel diaphragm. Unlike elastomeric diaphragms that can outgas or permeate impurities, the stainless steel construction provides a non-contaminating barrier that ensures the integrity of the gas stream. This is complemented by a metal-to-metal seal between the body and the diaphragm, eliminating the need for gaskets that could degrade over time or introduce contaminants. The body itself is machined from brass bar stock and finished with nickel plating, offering a robust, diffusion-resistant housing that maintains system purity.

Safety and Versatility

Designed with safety in mind, the 620 Silverline features a capturable vent in the bonnet (1/16" FNPT). This allows users to pipe vented gases away to a safe location, a necessary feature when handling potentially hazardous or expensive gases in the event of a diaphragm failure. Furthermore, the regulator is engineered to withstand internal vacuums, making it suitable for rigorous purging operations without damage to the internal components. The filtered seat adds another layer of protection, preventing particulate matter from compromising the seal or the downstream equipment.

Specifications and Compatibility

This model comes equipped with a CGA 580 inlet connection, making it compatible with standard inert gas cylinders such as Argon, Nitrogen, and Helium. It supports a maximum inlet pressure of 3500 PSIG and offers a precise delivery range of 0-60 PSIG. The 2-1/2 inch single scale gauge provides clear readability, ensuring operators can monitor system status at a glance.