220-8208 - Silverline High Purity Analytical Two Stage Regulator CGA 540

Precision Control for Analytical Applications

The Miller Smith 220-82-08 Silverline High Purity Analytical Two Stage Regulator is engineered specifically for the rigorous demands of laboratory and analytical environments. Designed to manage high-purity, non-corrosive gases, this regulator is a staple for professionals requiring absolute precision in gas delivery. The core of its performance lies in its two-stage architecture, which reduces cylinder pressure in two steps. This design characteristic is paramount for analytical work, as it ensures a constant delivery pressure regardless of fluctuations in the inlet pressure as the supply cylinder empties. For applications like gas chromatography, where flow stability directly impacts data integrity, this feature is indispensable.

Construction quality is a hallmark of the Silverline series. The unit features a rugged brass bar stock body that is nickel-plated, providing a clean, corrosion-resistant finish suitable for clean-room environments. Internally, the regulator utilizes a stainless steel diaphragm. Unlike elastomeric diaphragms that can outgas or absorb contaminants, stainless steel ensures the integrity of the gas stream is maintained from the cylinder to the instrument. This makes it ideal for controlling carrier gases or calibration mixtures used in thermal conductivity, flame ionization, and electron capture detectors.

Operational safety and longevity are also addressed with a built-in capturable preset safety relief valve and a filtered seat. The filtered seat prevents particulate contamination from damaging the seating surface, thereby extending the service life of the regulator and maintaining a leak-tight seal. The regulator is also designed to withstand vacuums generated during purging operations, a common procedure in high-purity gas handling to eliminate atmospheric contamination before use. With large, 2-1/2 inch single-scale gauges, monitoring cylinder and delivery pressure is effortless, ensuring operators can maintain precise control over their processes.