211-4006 - Miller Smith 210 Silverline High Purity Regulator CGA 350

Technical Overview of the Miller Smith 211-40-06

The Miller Smith 211-40-06 is a premium component within the 210 Silverline Series, engineered specifically for high-purity analytical applications. This single-stage regulator is designed to manage non-corrosive gases where maintaining stream purity is critical, yet the extreme precision of a two-stage regulator is not required for the specific delivery pressure profile. The unit features a CGA 350 inlet connection, making it suitable for specific flammable gas mixtures often found in laboratory settings, such as hydrogen or methane mixtures (user must verify gas compatibility with CGA standards). The regulator offers a delivery pressure range of 0-60 PSIG, supported by a maximum inlet pressure rating of 3500 PSIG.

Construction integrity is a focal point of the 211-40-06. It utilizes a rugged brass bar stock body that has been fully plated—along with the bonnet and gauges—to provide superior resistance to external corrosion and to maintain a clean aesthetic in laboratory environments. Internally, the regulator is equipped with a stainless steel diaphragm. This is a crucial specification for analytical work, as stainless steel diaphragms eliminate the outgassing and absorption issues associated with elastomeric diaphragms, ensuring that the gas stream remains uncontaminated. The seat is filtered to prevent particulate damage, extending the service life of the unit even in demanding cycles.

Functionally, the regulator is built to withstand vacuums generated during purging operations, a common procedure in high-purity gas delivery systems to remove atmospheric contaminants before gas flow begins. It also includes a built-in capturable preset safety relief valve, adding a layer of safety by venting excess pressure away from the user if necessary. The body is tapped for rear panel mounting, allowing for seamless integration into instrument panels or gas management boards. The large 2-1/2 inch gauges provide clear, single-scale readouts for both inlet and delivery pressures, ensuring operators can monitor system status at a glance.