210-4009 - Smith 210 Series High Purity Analytical Regulator CGA 580 15 PSI

Technical Overview of the Miller Smith 210-40-09

The Miller Smith 210-40-09 Silverline High Purity Analytical Single Stage Regulator is engineered for applications requiring stringent gas purity without the cost associated with full stainless steel body construction. This regulator is specifically designed to control high purity, non-corrosive gases such as Argon, Nitrogen, and Helium, utilizing a CGA 580 inlet connection. The unit operates with a maximum inlet pressure of 3500 PSIG and provides a precise delivery pressure range of 0-15 PSIG, making it ideal for sensitive low-pressure applications.

Central to its performance is the stainless steel diaphragm, which provides a non-contaminating seal and precise response to pressure changes. Unlike neoprene or elastomeric diaphragms, the stainless steel construction prevents off-gassing and absorption, ensuring the integrity of the analytical gas stream. The seat mechanism is protected by a filter to prevent particulate damage, significantly extending the service life of the regulator and maintaining leak-tight performance over time.

The regulator body is machined from rugged brass bar stock, which is then fully plated—along with the bonnet and gauge cases—to resist corrosion and maintain a clean aesthetic suitable for laboratory environments. The design is highly resistant to inboard diffusion of atmospheric contaminants, a critical factor in analytical work. Furthermore, the assembly is robust enough to withstand vacuums generated during system purging operations, preventing diaphragm damage that can occur with lesser regulators. The unit features large 2-1/2 inch gauges for clear visibility and includes a built-in capturable preset safety relief valve to protect downstream equipment.