221-2010 - Miller Smith Silverline High Purity Two-Stage Regulator CGA 590

Precision Control for Analytical Applications

The Miller Smith 221-20-10 Silverline High Purity Analytical Two Stage Regulator is engineered for applications demanding the utmost precision and gas purity. Designed as part of the renowned 220 Silverline Series, this regulator features a sophisticated two-stage reduction mechanism. Unlike single-stage counterparts, a two-stage regulator reduces cylinder pressure in two steps, ensuring that the delivery pressure remains constant even as the cylinder pressure decays. This characteristic is critical in analytical environments such as gas chromatography, where fluctuations in carrier gas pressure can compromise results.

At the heart of this regulator is a stainless steel diaphragm. This component provides a non-contaminating surface that preserves the purity of the gas stream, making it ideal for high-purity, non-corrosive gases. The diaphragm's material properties also offer superior sensitivity, allowing for precise control of delivery pressure within the 0-60 PSIG range. The regulator is equipped with a CGA 590 inlet connection, typically utilized for industrial air and specific specialty gas mixtures, ensuring compatibility with standard high-pressure cylinders up to 3500 PSIG.

Durability and cleanliness are further enhanced by the regulator's construction. The brass bar stock body, bonnet, and gauges are fully plated, offering excellent resistance to corrosion and maintaining a clean aesthetic suitable for laboratory settings. A filtered seat is integrated into the design to trap particulate matter, protecting the seating surface and extending the service life of the unit. Additionally, the regulator includes a built-in capturable preset safety relief valve, which safeguards downstream equipment from over-pressurization while allowing vented gas to be piped away safely if necessary.

This unit is specifically recommended for controlling carrier gases or calibration mixtures in thermal conductivity, flame ionization, flame photometry, and electron capture detectors. With its combination of precise pressure control, high-purity construction, and robust safety features, the Miller Smith 221-20-10 stands as a premier choice for analytical professionals requiring reliable gas delivery systems.