623-01050000 - Miller Smith 620 Silverline High Purity Air Regulator CGA 346

Precision Control for High Purity Applications

The Miller Smith 623-01-05-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for applications where gas purity and stable pressure delivery are non-negotiable. Part of the renowned 620 Silverline Series, this regulator is specifically configured with a CGA 346 connection, making it suitable for high-purity air and industrial air applications requiring delivery pressures up to 250 PSI.

Advanced Diaphragm Technology

At the core of this regulator is a specially designed stainless steel diaphragm. In standard regulators, elastomeric diaphragms can absorb impurities and release them back into the gas stream—a phenomenon known as off-gassing. The 623 Series eliminates this risk by utilizing a stainless steel diaphragm with a metal-to-metal body seal. This construction ensures that the gas stream remains uncontaminated, preserving the integrity of your analytical results or sensitive processes.

Two-Stage Stability

As a two-stage regulator, the 623-01-05-00-00 reduces cylinder pressure in two distinct steps. The first stage lowers the high inlet pressure (up to 3500 PSI) to an intermediate level, while the second stage reduces it to the precise working pressure you select. This mechanical advantage provides a constant delivery pressure regardless of fluctuations in the supply cylinder. As the tank empties, single-stage regulators often suffer from "decay" or rising outlet pressure; the Smith 620 Series maintains a flat, consistent flow until the cylinder is depleted.

Robust Construction & Safety

Built from nickel-plated brass bar stock, the body is both durable and resistant to environmental corrosion. The unit features a filtered seat to trap particulates before they can damage the sealing surfaces. For safety in laboratory environments, the bonnet includes a capturable vent (1/16" FNPT), allowing users to pipe vented gases away if a diaphragm failure were to occur. This regulator is also capable of withstanding internal vacuums, making it suitable for purge cycles.