222-4208 - Miller Smith Silverline 220 Series High Purity Oxygen Regulator, 2-Stage, 0-100 PSI

Precision Control for Analytical Applications

The Miller Smith 222-42-08 Silverline High Purity Analytical Two Stage Regulator is engineered for environments where gas purity and pressure stability are paramount. Part of the renowned 220 Silverline Series, this regulator is specifically configured for Oxygen service with a CGA 540 connection. It features a robust two-stage design that reduces cylinder pressure in two steps, ensuring that the delivery pressure remains constant even as the cylinder drains. This characteristic is critical for analytical applications such as gas chromatography, thermal conductivity testing, and flame ionization, where pressure fluctuations can compromise results.

Constructed from rugged brass bar stock, the body and bonnet are plated to provide superior protection against environmental factors and to maintain a clean aesthetic suitable for laboratory settings. The heart of the regulator is its stainless steel diaphragm, which offers precise control over the 0-100 PSI delivery range while preventing the off-gassing or contamination often associated with elastomeric diaphragms. This makes it an excellent choice for high-purity, non-corrosive pure gases and calibration mixtures.

Operational safety and longevity are built into the design. The regulator includes a filtered seat that traps particulates, enhancing gas stream purity and extending the service life of the internal components. A built-in capturable preset safety relief valve protects downstream equipment from over-pressurization. Additionally, the unit is designed to withstand vacuums generated during purging operations, a common procedure in high-purity gas handling. Large, 2-1/2 inch single-scale gauges provide clear, easy-to-read pressure monitoring at a glance.