320-67240000 - Miller Smith 320 Series High Purity SS Regulator, 2-Stage, 0-25 PSI, CGA 580

Precision Control for High Purity Applications

The Miller Smith 320-67-24-00-00 is a premium High Purity Corrosion Resistant Stainless Steel Two-Stage Regulator designed for the most demanding gas delivery applications. Part of the renowned 320 Silverline Series, this regulator is engineered to handle both corrosive and non-corrosive gases where maintaining gas stream purity is critical. The unit features a robust 316 stainless steel bar stock body and a 316 stainless steel filtered seat, which not only prevents contamination but also significantly extends the service life of the component by protecting the seating surface from particulate damage.

One of the standout features of this regulator is its two-stage architecture. Unlike single-stage regulators that experience a rise in delivery pressure as the supply cylinder empties (the decaying inlet characteristic), this two-stage model provides a constant, stable delivery pressure regardless of inlet pressure fluctuations. This makes it ideal for analytical instruments, chromatography, and other laboratory applications where pressure stability is paramount. The delivery range of 0-25 PSI allows for fine-tuned low-pressure control, essential for sensitive equipment.

Safety and integrity are woven into the design. The regulator utilizes a convoluted stainless steel diaphragm with a unique metal-to-metal seal, ensuring maximum leak integrity—a critical requirement when handling hazardous or expensive specialty gases. Furthermore, the bonnet includes a captured vent port (1/16" FNPT), allowing users to pipe vented gases away to a safe location in the rare event of a diaphragm failure. The device is also designed to withstand internal vacuums, making it compatible with purging operations necessary for high-purity setups. Note that a Cross Purge Assembly is recommended for use with this series to ensure effective purging of hazardous gas traces during cylinder changes.