221-4008 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 540

Precision Control for Analytical Applications

The Miller Smith 221-40-08 Silverline High Purity Analytical Two Stage Regulator is engineered for environments where precision and purity are non-negotiable. Designed specifically for high-purity, non-corrosive pure gases and mixtures, this regulator is a staple in laboratories utilizing gas chromatography techniques such as thermal conductivity, flame ionization, flame photometry, and electron capture. The core of its performance lies in the stainless steel diaphragm, which provides precise pressure control while eliminating the risk of elastomeric outgassing that can contaminate sensitive carrier gas streams.

Stability is paramount in analytical work, and the 220 Silverline Series delivers with its robust two-stage architecture. This design allows for constant delivery pressure from a full cylinder down to a nearly empty one, removing the need for constant manual adjustments as the inlet pressure decays. This feature is critical for maintaining the baseline stability of analytical instruments over long run times. The unit is also built to withstand vacuums generated during purging operations, ensuring that the integrity of your gas lines is maintained during cylinder changeovers.

Durability meets cleanliness in the construction of the 221-40-08. The body is machined from rugged brass bar stock and fully plated, along with the bonnet and gauges, to offer superior protection against corrosion and to maintain a clean laboratory aesthetic. A filtered seat is integrated to trap particulates, further enhancing gas stream purity and extending the service life of the regulator. With large, easy-to-read 2-1/2 inch single scale gauges, monitoring your process parameters is effortless and accurate.