311-83310000 - Miller Smith 310 Silverline High Purity Stainless Steel Regulator, 0-50 PSIG, CGA 705

Precision Control for High Purity Applications

The Miller Smith 310 Silverline Series Single Stage Regulator (SKU: 311-83-31-00-00) is engineered specifically for the rigorous demands of high purity, corrosive, and toxic gas applications. Constructed from premium 316 stainless steel bar stock, this regulator ensures that the gas stream remains uncontaminated by the regulator body itself, a critical factor in analytical and process applications. The internal design features a 316 PCTFE filtered seat, which not only provides excellent chemical resistance but also protects the seating surface from particulate damage, thereby extending the operational life of the unit.

At the heart of the 310 Silverline is a specially designed convoluted stainless steel diaphragm. Unlike standard flat diaphragms, this convoluted design offers superior sensitivity and response to pressure changes, allowing for highly accurate regulation of delivery pressure between 0 and 50 PSIG. The metal-to-metal diaphragm seal eliminates the need for elastomeric seals that can outgas or degrade over time, ensuring maximum leak integrity—a non-negotiable requirement when handling hazardous or toxic media.

Safety is paramount in the design of the 311-83310000. The bonnet includes a captured vent port (1/16” FNPT), which allows operators to pipe vented gases away to a safe disposal system in the unlikely event of a diaphragm failure. This feature is essential for maintaining a safe working environment when working with dangerous gases. Additionally, the regulator is capable of withstanding an internal vacuum, making it compatible with purge cycles required to maintain system purity during cylinder changes. With a maximum inlet pressure of 3500 PSIG and a CGA 705 connection, this regulator is a robust solution for specialty gas management.