621-40090000 - Miller Smith 620 Silverline High Purity Two-Stage Regulator, CGA 580, 0-60 PSI

Precision Control for High Purity Gases

The Miller Smith 621-40-09-00-00 is a distinguished member of the 620 Silverline Series, engineered specifically for the rigorous demands of specialty gas delivery. Designed for non-corrosive gases, this high-purity two-stage regulator exemplifies precision engineering, offering a stable delivery pressure range of 0-60 PSI. It is the ideal solution for laboratory environments, analytical instrumentation, and process control applications where gas purity and pressure stability are non-negotiable.

Advanced Two-Stage Architecture

At the core of this regulator is a sophisticated two-stage mechanism. Unlike single-stage counterparts that may suffer from decaying outlet pressure as the supply cylinder empties, the 621-40-09-00-00 maintains a constant delivery pressure regardless of inlet fluctuations. This feature is critical for long-duration processes where consistency is paramount. With a maximum inlet pressure rating of 3500 PSI, it robustly handles standard high-pressure cylinders while stepping down pressure with exceptional accuracy.

Uncompromised Material Integrity

Purity is maintained through superior materials and construction. The regulator features a nickel-plated brass bar stock body, which provides excellent durability and resistance to environmental corrosion. Crucially, the diaphragm is constructed from high-grade stainless steel. This choice of material, combined with a metal-to-metal body-to-diaphragm seal, eliminates the risk of elastomeric outgassing that can contaminate high-purity gas streams. The design also includes a filtered seat to trap particulates, further ensuring the integrity of the gas stream and prolonging the service life of the regulator.

Safety and Versatility

Safety is integrated into the design with a capturable vent in the bonnet (1/16" FNPT), allowing for the safe piping away of gases in the unlikely event of a diaphragm failure. The unit is also capable of withstanding internal vacuums, making it suitable for purge cycles essential in high-purity setups. Fitted with a CGA 580 connection, it is compatible with a wide range of inert gases including Argon, Nitrogen, and Helium.