620-00090000 - Miller Smith 620 Series High Purity Two-Stage Regulator, CGA 580, 0-25 PSI

Precision Control for High Purity Applications

The Miller Smith 620-00-09-00-00 Silverline High Purity Brass Two Stage Regulator is engineered to meet the exacting demands of laboratory and analytical environments. Designed specifically for non-corrosive specialty gases, this regulator ensures that the purity of your gas stream is maintained from the cylinder to the instrument. The core of this performance lies in its stainless steel diaphragm. Unlike elastomeric diaphragms that can degrade or off-gas over time, the stainless steel construction eliminates the risk of sample contamination, making it the ideal choice for chromatography, calibration mixtures, and other sensitive processes.

Stability is paramount in precision work, and the 620 Series delivers with its two-stage regulation mechanism. Single-stage regulators often suffer from a phenomenon known as the "decaying inlet characteristic," where the outlet pressure rises as the cylinder pressure falls. The 620 Series eliminates this variable, providing a constant 0-25 PSIG delivery pressure regardless of fluctuations in the inlet supply (up to 3500 PSIG). This "set it and forget it" reliability allows researchers and technicians to focus on their results rather than monitoring gauge pressures.

Constructed from nickel-plated brass bar stock, the body of the regulator is both durable and diffusion-resistant. The metal-to-metal seal between the body and the diaphragm ensures a leak-tight integrity that surpasses standard o-ring seals. Furthermore, the unit features a capturable vent (1/16" FNPT) in the bonnet, a critical safety feature that allows for the piping away of vented gases in the unlikely event of a diaphragm failure. With a filtered seat to prevent particulate damage and the ability to withstand internal vacuums during purging, the Miller Smith 620 Series is the definitive solution for high-purity gas control.