620-02050000 - Miller Smith 620 Silverline High Purity 2-Stage Regulator CGA 346

Precision Control for High Purity Applications

The Miller Smith 620 Series Silverline High Purity Brass Two Stage Regulator is engineered for environments where gas purity and pressure stability are non-negotiable. Designed specifically for non-corrosive specialty gases, this regulator features a robust nickel-plated brass bar stock body that resists environmental corrosion while maintaining a pristine internal flow path. The heart of the 620 Series is its unique stainless steel diaphragm, which provides superior sensitivity and accuracy compared to standard elastomeric diaphragms. This metal-to-metal seal construction eliminates the outgassing and contamination risks associated with rubber seals, ensuring that your process gas remains as pure at the outlet as it was in the cylinder.

For laboratory and analytical applications utilizing compressed air (CGA 346), stability is paramount. The two-stage reduction mechanism of the 620-02-05-00-00 ensures a constant delivery pressure of 0-25 PSI, regardless of fluctuations in the inlet supply. As the cylinder drains, single-stage regulators typically suffer from "decay" or rising outlet pressure; the 620 Series eliminates this variable, allowing researchers and technicians to focus on their work rather than monitoring gauges. The unit also includes a 316 stainless steel filter at the seat to trap particulates, further protecting the integrity of the gas stream and the regulator's internal components.

Safety and versatility are built into the design. The bonnet features a capturable vent (1/16" FNPT), allowing users to pipe vented gases away from the workspace in the unlikely event of a diaphragm failure—a critical feature for enclosed environments. Additionally, the regulator is designed to withstand internal vacuums, making it suitable for purge cycles essential in high-purity gas delivery systems. Whether for gas chromatography, emission monitoring, or precise process control, the Miller Smith 620 Series delivers the reliability required by demanding technical fields.