220-0306 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 350

Precision Control for Analytical Applications

The Miller Smith 220-03-06 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 gas applications, this regulator ensures that your sensitive instrumentation receives a stable and contaminant-free gas flow. With a CGA 350 inlet connection, it is typically suitable for flammable gases such as Hydrogen, Carbon Monoxide, or Ethylene mixtures often used in gas chromatography and other analytical techniques.

Uncompromised Purity and Stability

In analytical settings, gas purity is paramount. The Silverline 220 Series features a stainless steel diaphragm which provides a metal-to-metal seal, eliminating the risk of outgassing associated with elastomeric diaphragms. This ensures that the carrier gases or calibration mixtures remain pure from the cylinder to the instrument. Furthermore, the regulator includes a filtered seat that traps microscopic particles, protecting the seat from damage and further ensuring the integrity of the gas stream. This attention to detail extends the service life of the regulator and reduces maintenance downtime.

Two-Stage Performance

The defining feature of the 220-03-06 is its two-stage design. Unlike single-stage regulators that allow delivery pressure to rise as the cylinder pressure falls (the decaying inlet characteristic), this two-stage unit reduces pressure in two steps. The result is an exceptionally constant delivery pressure of 0-15 PSIG throughout the entire life of the cylinder. This stability is critical for applications like thermal conductivity detectors, flame ionization, and electron capture systems where pressure fluctuations can lead to inaccurate readings or baseline drift.

Rugged and Safe Construction

Built from rugged brass bar stock, the body, bonnet, and gauges are fully plated to resist corrosion and maintain a clean appearance in laboratory settings. The regulator is equipped with large, easy-to-read 2-1/2 inch gauges and a built-in capturable preset safety relief valve to protect downstream equipment from over-pressurization. Additionally, the design is robust enough to withstand vacuums generated during system purging operations, making it a versatile choice for complex gas delivery manifolds.