320-85250000 - Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator, CGA 660, 0-25 PSI

Precision Control for Corrosive Environments

The Miller Smith 320 Series High Purity Two-Stage Regulator is engineered specifically for the rigorous demands of specialty gas delivery. Designed to handle both corrosive and non-corrosive gases, this regulator is built with a 316 stainless steel bar stock body and wetted parts, ensuring exceptional resistance to chemical attack and maintaining the purity of the gas stream. The inclusion of PCTFE seats further enhances the unit's durability and compatibility with a wide range of hazardous gases. This model, identified by SKU 320-85-25-00-00, features a CGA 660 connection, making it suitable for specific corrosive gas applications requiring a secure and compatible interface.

At the core of the 320 Series is a sophisticated two-stage mechanism. Unlike single-stage regulators that may experience a drop in delivery pressure as the supply cylinder empties, this two-stage design provides a constant delivery pressure regardless of inlet pressure fluctuations. This stability is critical for analytical laboratories and high-precision industrial processes where consistency is paramount. The regulator utilizes a convoluted stainless steel diaphragm that offers superior sensitivity and precise control over the 0-25 PSI delivery range. The metal-to-metal diaphragm seal eliminates the need for elastomeric seals in the diaphragm assembly, thereby maximizing leak integrity and preventing contamination of the high-purity gas stream.

Safety is a primary consideration in the design of the Miller Smith 320 Series. The regulator features captured vent ports (1/16" FNPT) in the bonnet, allowing for the safe piping and venting of hazardous gases in the unlikely event of a diaphragm failure. Additionally, the unit is designed to withstand internal vacuums, making it compatible with purging operations essential for changing cylinders safely. A 316 stainless steel filtered seat is integrated to trap particulates, protecting the internal components and extending the service life of the regulator. With large, easy-to-read 2-1/2 inch gauges and provisions for panel mounting, this regulator combines operational safety, robust construction, and user-friendly features for the most demanding gas delivery systems.