621-20020000 - Miller Smith 620 Series Silverline High Purity 2-Stage CO2 Regulator 0-60 PSI

Precision Control for High Purity Applications

The Miller Smith 621-20-02-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for professionals demanding exacting standards in gas delivery. Part of the renowned 620 Silverline Series, this regulator is specifically designed for non-corrosive specialty gases, such as Carbon Dioxide (CO2), where maintaining gas stream purity is paramount. The unit features a CGA 320 inlet connection and delivers a precise pressure range of 0-60 PSI, making it suitable for sensitive analytical instruments and laboratory setups.

Advanced Two-Stage Architecture

Unlike single-stage counterparts, this two-stage regulator provides a constant outlet pressure regardless of fluctuations in the inlet pressure. As the gas cylinder empties and pressure decays, the 620 Silverline compensates automatically, eliminating the need for frequent manual adjustments. This stability is critical for long-duration processes where consistency is non-negotiable.

Material Integrity and Contamination Control

Constructed from nickel-plated brass bar stock, the body offers robust durability while resisting environmental corrosion. The heart of the regulator is its unique stainless steel diaphragm, which provides maximum accuracy and a stable regulation of delivery pressure. Crucially, the metal-to-metal seal between the body and the diaphragm eliminates the need for elastomeric seals that can outgas or degrade, thereby preserving the purity of the gas stream. A 316 stainless steel filter further protects the seat from particulate contamination.

Safety and Versatility

Safety is integrated into the design with capturable vents in the bonnet (1/16" FNPT) for both stages, allowing for the safe piping away of gases in the rare event of a diaphragm failure. The regulator is also capable of withstanding internal vacuums, making it compatible with purging operations. With threaded bonnets for panel mounting and a high-quality needle valve for flow control, this regulator is a versatile solution for sophisticated gas management systems.