222-4206 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 350

Precision Control for Analytical Applications

The Miller Smith 222-42-06 Silverline High Purity Analytical Two Stage Regulator is engineered to meet the rigorous demands of laboratory and analytical environments. Designed specifically for high purity, non-corrosive gas applications, this regulator is a staple for professionals utilizing gas chromatography techniques such as thermal conductivity, flame ionization, flame photometry, and electron capture. The core of its performance lies in the two-stage design, which provides a consistent delivery pressure ranging from 0 to 100 PSIG, regardless of fluctuations in the cylinder pressure. This feature is critical for maintaining the integrity of sensitive analytical results where pressure stability is paramount.

Constructed with a focus on purity and durability, the 222-42-06 features a stainless steel diaphragm. Unlike elastomeric diaphragms, stainless steel prevents outgassing and absorption, ensuring that the gas stream remains uncontaminated. This makes it an ideal choice for carrier gases and calibration mixtures. The regulator also incorporates a filtered seat, which not only adds another layer of protection for gas purity but also extends the service life of the seat by preventing particulate damage. The unit is built to withstand vacuums generated during purging operations, further enhancing its versatility in complex gas delivery systems.

Visually and structurally, the Silverline series stands out with its fully plated body, bonnet, and gauges. This chrome plating offers superior protection against environmental corrosion and maintains a clean, professional appearance suitable for lab settings. The large 2-1/2 inch single scale gauges are easy to read, allowing for quick verification of tank and delivery pressures. Safety is also integrated into the design with a built-in capturable preset safety relief valve, protecting downstream equipment from over-pressurization. With a CGA 350 connection, this regulator is ready for service with Hydrogen, Methane, and compatible mixtures, supporting inlet pressures up to 3500 PSIG.