223-2000 - Miller Smith Silverline 220 Series Two-Stage High Purity Regulator 0-150 PSI

Precision Control for Analytical Applications

The Miller Smith 223-20-00 Silverline High Purity Analytical Two Stage Regulator is engineered to meet the rigorous demands of laboratory and analytical environments. Designed specifically for high purity, non-corrosive pure gases and mixtures, this regulator is a critical component for applications where gas integrity and pressure stability are paramount. The 220 Series Silverline regulators are widely recognized for their reliability in controlling carrier gases and calibration mixtures used in gas chromatography, including thermal conductivity, flame ionization, flame photometry, and electron capture processes.

Advanced Two-Stage Design

One of the defining features of the 223-20-00 is its two-stage regulation mechanism. In analytical chemistry, maintaining a constant delivery pressure is essential for accurate results. Single-stage regulators often suffer from "decaying inlet characteristic," where the delivery pressure rises as the cylinder pressure falls. The two-stage design of this Miller Smith unit eliminates this issue by stepping down the pressure in two phases, ensuring that the output remains stable from a full cylinder down to a nearly empty one. This stability allows researchers and technicians to focus on their analysis without constantly adjusting regulator settings.

Material Purity and Construction

To maintain the purity of the gas stream, the regulator features a stainless steel diaphragm. Unlike elastomeric diaphragms that can off-gas or absorb impurities, stainless steel provides a non-contaminating surface that ensures the gas delivered to your instruments is as pure as the gas in the cylinder. Additionally, the regulator includes a filtered seat which not only adds another layer of protection for gas stream purity but also extends the service life of the seat by preventing particulate damage. The body, bonnet, and gauges are plated to provide superior protection against corrosion and to maintain a clean, professional appearance suitable for laboratory settings.

Safety and Versatility

Safety is integrated into the design with a built-in capturable preset safety relief valve, protecting downstream components from over-pressurization. The regulator is also robust enough to withstand vacuums generated during purging operations, a common procedure in high-purity gas handling. With 1/4" FNPT connections, it offers versatility for various installation configurations, whether directly on a line or adapted for specific cylinder valves.