221-0006 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 350

Precision Control for Analytical Applications

The Miller Smith 221-00-06 Silverline High Purity Analytical Two-Stage Regulator is engineered specifically for the rigorous demands of laboratory and analytical environments. When working with sensitive equipment such as gas chromatographs, thermal conductivity detectors, or flame ionization detectors, maintaining gas purity and pressure stability is paramount. This regulator features a high-grade stainless steel diaphragm that ensures precise pressure control while preventing contamination of the gas stream, a critical factor in high-purity applications.

Designed for use with CGA 350 gases—typically including hydrogen, methane, and carbon monoxide mixtures—this regulator excels in delivering a constant outlet pressure regardless of fluctuations in the supply cylinder. The two-stage mechanism steps down pressure in two intervals, providing a steady flow from a full cylinder down to a nearly empty one. This eliminates the need for constant manual adjustments and ensures the integrity of long-duration analytical runs.

Durability meets precision in the Silverline 220 Series. The unit is constructed from rugged brass bar stock, which is then fully plated—including the body, bonnet, and gauges—to offer superior protection against environmental factors and to maintain a clean, professional appearance suitable for lab settings. A filtered seat is integrated into the design to trap particulates, further enhancing gas stream purity and extending the service life of the regulator components.

Safety and ease of use are also prioritized. The regulator includes a built-in capturable preset safety relief valve to protect downstream equipment from over-pressurization. The large 2-1/2 inch single-scale gauges are easy to read, allowing operators to monitor cylinder and delivery pressure at a glance. With a maximum inlet pressure of 3500 PSI and a delivery range of 0-60 PSI, the 221-00-06 is the reliable choice for professionals requiring exacting standards in specialty gas delivery.