623-00100000 - Miller Smith Silverline 620 Series High Purity 2-Stage Regulator, CGA 590, 250 PSI

Precision Control for High Purity Applications

The Miller Smith 623-00-10-00-00 Silverline High Purity Brass Two Stage Regulator is an elite instrument engineered for the rigorous demands of specialty gas delivery. Designed specifically for non-corrosive gases requiring absolute stream purity, this regulator features a robust nickel-plated brass bar stock body and a specialized stainless steel diaphragm. Unlike standard rubber diaphragms, the stainless steel construction prevents off-gassing and absorption, ensuring that the gas delivered to your process remains as pure as the source. The metal-to-metal seal between the body and diaphragm further eliminates the need for elastomer seals that could degrade or contaminate the flow path.

Stability is the hallmark of the 620 Silverline series. As a two-stage regulator, it reduces cylinder pressure in two steps, providing a consistent delivery pressure of 0-250 PSI regardless of fluctuations in the inlet pressure. This is critical for analytical instruments and precise industrial applications where pressure drift can compromise results. The unit is equipped with a CGA 590 inlet connection, typically used for Sulfur Hexafluoride (SF6) and other compatible industrial air or specialty gases, and supports a maximum inlet pressure of 3500 PSI.

Safety and versatility are built into the design. The regulator includes captured vent ports (1/16" FNPT) on the bonnet, allowing users to pipe hazardous or displacing gases away from the work area in the unlikely event of a diaphragm failure. Additionally, the unit is capable of withstanding internal vacuums, making it suitable for purge cycles essential in high-purity setups. With a 316 stainless steel filter protecting the seat and threaded bonnets for panel mounting, this Miller Smith regulator is a durable, high-performance solution for sophisticated gas management systems.