321-00200000 - Miller Smith 320 Series High Purity Stainless Steel Regulator, CGA 320, 50 PSI

Uncompromised Purity and Precision

The Miller Smith 321-00-20-00-00 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 corrosive and non-corrosive gases with absolute precision. The unit features a CGA 320 inlet connection, making it specifically suitable for Carbon Dioxide (CO2) service in environments where purity and material integrity are paramount. With a delivery pressure range of 0-50 PSI, it offers fine-tuned control for sensitive downstream equipment.

Constructed from high-grade 316 stainless steel bar stock, the body and wetted parts offer superior resistance to corrosion, ensuring a long service life even when exposed to harsh chemical environments. The regulator utilizes a 316 stainless steel filtered seat which not only extends the lifespan of the unit but also acts as a critical barrier to maintain gas stream purity. This makes it an excellent choice for analytical laboratories, pharmaceutical manufacturing, and petrochemical testing where even microscopic contamination can compromise results.

One of the standout features of this model is its two-stage design. Unlike single-stage regulators that experience a rise in delivery pressure as the cylinder pressure drops (the decaying inlet characteristic), this two-stage regulator provides a constant, unwavering delivery pressure throughout the life of the cylinder. This stability is achieved through a convoluted stainless steel diaphragm that offers exceptional sensitivity and response to pressure changes. Furthermore, the metal-to-metal diaphragm seal ensures maximum leak integrity, a critical safety feature when handling hazardous or expensive specialty gases.

Safety is further enhanced by the inclusion of captured vent ports in the bonnet (1/16" FNPT). These ports allow for the safe piping and venting of hazardous gases in the unlikely event of a diaphragm failure, protecting both the operator and the facility. The regulator is also designed to withstand internal vacuums, making it compatible with purging operations necessary for high-purity gas changeovers.