313-00230000 - Miller Smith Silverline 310 Series High Purity Stainless Steel Regulator, CGA 350, 0-250 PSIG

Technical Overview of the Miller Smith Silverline 310 Series Regulator

The Miller Smith 313-00-23-00-00 is a premium component within the 310 Silverline Series, engineered specifically for the rigorous demands of high-purity, toxic, and corrosive gas handling. This single-stage regulator is machined from 316 stainless steel bar stock, ensuring a non-reactive flow path that maintains the integrity of the gas stream while resisting chemical attack. The unit is configured with a CGA 350 inlet, making it suitable for hydrogen, methane, and other flammable gas mixtures often found in laboratory and industrial synthesis applications. With a maximum inlet pressure rating of 3500 PSIG and a delivery range of 0-250 PSIG, it provides versatile pressure control for a variety of analytical and process requirements.

Central to its performance is the convoluted stainless steel diaphragm. Unlike elastomeric diaphragms that can outgas or degrade over time, the stainless steel diaphragm provides a metal-to-metal seal, guaranteeing maximum leak integrity—a critical factor when handling hazardous media. The diaphragm's convoluted design enhances sensitivity, allowing for precise pressure regulation even as cylinder pressure decays. The seat assembly utilizes PCTFE (Polychlorotrifluoroethylene), chosen for its high compressive strength, low deformation under load, and excellent chemical resistance, further ensuring a long service life and consistent shut-off performance.

Safety and system integration are key aspects of the 313-00-23-00-00 design. The bonnet features a captured 1/16-inch FNPT vent port, allowing operators to pipe vented gases away to a safe scrubbing or exhaust system in the event of a diaphragm failure. This feature is indispensable for facilities managing toxic or pyrophoric gases. Additionally, the regulator is designed to withstand internal vacuum, facilitating effective purge cycles during cylinder change-outs to prevent atmospheric contamination. The body includes tapping for rear panel mounting, and the bonnet is threaded for front panel mounting, offering flexible installation options for gas cabinets and instrument benches.