221-0009 - Miller Smith 220 Series Silverline High Purity Two-Stage Regulator CGA 580

Precision Control for Analytical Applications

The Miller Smith 221-00-09 Silverline High Purity Analytical Two Stage Regulator is engineered to meet the rigorous demands of laboratory and analytical environments. Part of the esteemed 220 Silverline Series, this regulator is specifically designed for high purity, non-corrosive pure gases and mixtures. It is the ideal solution for controlling carrier gases or calibration mixtures used in sensitive gas chromatography applications, including thermal conductivity, flame ionization, flame photometry, and electron capture detectors. The regulator features a CGA 580 inlet connection, making it compatible with standard inert gas cylinders such as Nitrogen, Argon, and Helium.

Advanced Two-Stage Design

Stability is paramount in analytical work. This unit utilizes a sophisticated two-stage design that provides precise control from a full cylinder down to nearly empty. Unlike single-stage regulators that may experience a 'decay' or rise in outlet pressure as the inlet pressure drops, the 221-00-09 maintains a constant delivery pressure throughout the life of the cylinder. This feature is critical for maintaining the accuracy and repeatability of analytical instruments where flow rate consistency is non-negotiable.

Material Integrity and Purity

To ensure the integrity of the gas stream, the regulator is constructed with a stainless steel diaphragm. This material choice is crucial for preventing the off-gassing and elastomeric contamination often associated with rubber diaphragms. Additionally, the seat is filtered to further enhance gas stream purity and extend the service life of the internal components by preventing particulate damage. The body, bonnet, and gauges are fully plated, providing superior protection against corrosion and maintaining a clean, professional appearance suitable for laboratory settings.

Safety and Durability

Safety is integrated into the design with a built-in capturable preset safety relief valve, which protects the regulator components and downstream equipment from over-pressurization. The rugged brass bar stock construction ensures the unit can withstand the physical demands of industrial use, while the large 2-1/2 inch single scale gauges provide clear, easy-to-read pressure monitoring. Furthermore, the regulator is engineered to withstand vacuums generated during purging operations, adding to its versatility in complex gas delivery systems.