221-0008 - Miller Smith 220 Series Silverline High Purity Two-Stage Regulator CGA 540

Miller Smith 221-00-08 Silverline High Purity Analytical Regulator Overview

The Miller Smith 221-00-08 Silverline High Purity Analytical Two-Stage Regulator is engineered for environments where precision and purity are non-negotiable. Designed specifically for analytical applications, this regulator excels in controlling carrier gases and calibration mixtures used in gas chromatography, including thermal conductivity, flame ionization, flame photometry, and electron capture processes. Its robust construction and advanced engineering make it a staple for laboratories and industrial settings requiring high-purity, non-corrosive gas delivery.

At the core of the 221-00-08 is a stainless steel diaphragm that provides precise control over outlet pressure while maintaining the integrity of the gas stream. Unlike standard rubber diaphragms, stainless steel prevents off-gassing and contamination, ensuring that the gas reaching your instrumentation remains as pure as the source. The regulator features a filtered seat which further enhances gas stream purity and significantly extends the service life of the unit by preventing particulate damage.

This regulator utilizes a two-stage design, which is critical for analytical work. As a gas cylinder empties, the inlet pressure drops, which can cause outlet pressure fluctuations in single-stage regulators. The 221-00-08 compensates for this decay, delivering a constant, unwavering pressure from a full cylinder down to nearly empty. This stability is essential for maintaining the accuracy of sensitive analytical instruments. The unit is finished with a plated body, bonnet, and gauges, offering superior protection against environmental corrosion and maintaining a clean, professional appearance suitable for laboratory environments.

Additional features include large, easy-to-read 2-1/2 inch single scale gauges and a built-in capturable preset safety relief valve that protects components from over-pressurization. The regulator is also designed to withstand vacuums generated during purging operations, adding to its versatility in complex gas setups.