322-66240000 - Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator, CGA 580, 0-100 PSIG

Technical Overview of the Miller Smith 320 Series Regulator

The Miller Smith 322-66-24-00-00 is a premium component within the 320 Silverline Series, engineered specifically for high-purity and specialty gas applications. This two-stage regulator is constructed from 316 stainless steel bar stock, ensuring exceptional resistance to corrosion and maintaining the integrity of the gas stream. The unit features a CGA 580 inlet connection, making it suitable for inert gases such as Argon, Helium, and Nitrogen, with a delivery pressure range of 0-100 PSIG. The internal architecture utilizes a PCTFE seat and a convoluted stainless steel diaphragm, which work in tandem to provide precise pressure regulation and extended service life.

A critical feature for analytical and laboratory environments is the metal-to-metal diaphragm seal, which maximizes leak integrity and prevents atmospheric contamination. The regulator is designed to withstand internal vacuums, a necessary capability for effective purging operations during cylinder changeovers. To further enhance safety, particularly when used in systems that might eventually handle hazardous gases, the bonnet includes a captured vent port (1/16" FNPT). This allows for the safe piping and venting of gases in the unlikely event of a diaphragm failure. The two-stage mechanism is essential for applications requiring stable outlet pressure, as it compensates for the decay in inlet pressure as the supply cylinder empties.

The 320 Series is also designed with integration in mind. Both the front and rear bonnets are threaded, facilitating front panel mounting for instrument consoles or gas management panels. The large 2-1/2 inch gauges provide clear, single-scale readings, reducing the risk of operator error. With a maximum inlet pressure rating of 3500 PSIG, this regulator is robust enough for standard high-pressure cylinders while delivering the finesse required for sensitive downstream equipment.