623-00000000 - Miller Smith 620 Series Silverline High Purity Two-Stage Regulator, 250 PSI, 1/4" FNPT

Precision Control for High Purity Applications

The Miller Smith 623-00-00-00-00 Silverline High Purity Brass Two Stage Regulator is engineered to meet the rigorous demands of analytical laboratories and specialty gas applications. Part of the esteemed 620 Silverline Series, this regulator is designed for non-corrosive gases where maintaining gas stream purity and precise pressure control is paramount. The unit features a robust two-stage design, which is critical for applications requiring a steady delivery pressure over the lifespan of the gas cylinder. Unlike single-stage regulators that may experience pressure decay or spikes as the inlet pressure drops, the 623 series maintains a constant output, ensuring the integrity of your sensitive processes.

At the heart of this regulator is a specially designed stainless steel diaphragm. This component is crucial for high-purity applications as it provides a metal-to-metal seal with the body, eliminating the need for elastomeric seals that can outgas or absorb impurities. The diaphragm's construction ensures maximum accuracy and sensitivity to pressure adjustments. To further protect the gas stream, the regulator includes a 316 stainless steel filter at the seat, preventing particulate contamination that could compromise both the regulator's performance and the downstream equipment.

The body is machined from brass bar stock and finished with nickel plating, offering a clean, durable surface that resists environmental corrosion. This model is configured with 1/4" FNPT inlet and outlet ports, providing flexibility for connection to various piping systems or custom hose assemblies. Safety is also a priority, with captured 1/16" FNPT vent ports on the bonnet allowing for the safe piping away of gases in the unlikely event of a diaphragm failure. Whether used for gas chromatography, research systems, or process control, the Miller Smith 623 regulator delivers the reliability and purity required for critical tasks.