221-0010 - Miller Smith 220 Series Silverline Two-Stage High Purity Regulator CGA 590

Precision Control for Analytical Applications

The Miller Smith 221-00-10 Silverline High Purity Analytical Two Stage Regulator is engineered specifically for the rigorous demands of laboratory and analytical environments. When dealing with sensitive instrumentation such as gas chromatographs, the stability and purity of the gas supply are paramount. This regulator addresses these needs with a suite of high-end features designed to minimize contamination and ensure consistent flow rates. The core of this unit is its two-stage design. Unlike single-stage regulators, which can experience a drop in delivery pressure as the cylinder empties (a phenomenon known as the decaying cylinder effect), a two-stage regulator reduces the pressure in two steps. This results in an exceptionally stable delivery pressure throughout the entire life of the cylinder, which is critical for maintaining the calibration and accuracy of analytical instruments.

Uncompromised Purity and Materials

To maintain the integrity of high-purity gases, the 221-00-10 features a stainless steel diaphragm. Elastomeric diaphragms can sometimes outgas or absorb impurities, but stainless steel provides a non-reactive barrier that preserves the gas composition. Furthermore, the regulator includes a filtered seat. This fine filtration prevents microscopic particles from entering the gas stream, which protects both the regulator's internal components and the downstream instrumentation from damage or contamination. The body, bonnet, and gauges are plated, offering superior protection against environmental corrosion and maintaining a clean, professional appearance suitable for laboratory settings.

Designed for Safety and Versatility

Safety is a key consideration in the design of the Silverline series. This model includes a built-in capturable preset safety relief valve. In the event of over-pressurization, the valve vents excess pressure safely, protecting the regulator and the user. The regulator is rated for a maximum inlet pressure of 3500 PSI, making it compatible with high-pressure cylinders. The CGA 590 connection is specific to certain industrial and specialty gases, often including Sulfur Hexafluoride (SF6) or specific industrial air blends. With a delivery range suitable for 0-50 PSI applications, it offers precise low-pressure control necessary for carrier gases and calibration mixtures.

Applications in Chromatography

This regulator is ideally suited for controlling carrier gases or calibration mixtures used in various gas chromatography methods, including thermal conductivity, flame ionization, flame photometry, and electron capture. The precise control allows for stable baselines and reproducible results. Whether you are purging systems or running continuous analysis, the Miller Smith 221-00-10 provides the reliability and performance required for high-stakes analytical work.