222-0009 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator, CGA 580

Precision Control for Analytical Applications

The Miller Smith 222-00-09 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 gases, this regulator is a critical component for applications requiring absolute stability and cleanliness, such as gas chromatography (thermal conductivity, flame ionization, flame photometry, and electron capture). The 220 Silverline Series represents the pinnacle of Miller Smith's regulator technology, combining rugged construction with sensitive control mechanisms.

Advanced Two-Stage Architecture

One of the defining features of the 222-00-09 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 maintains a constant delivery pressure throughout the entire life of the cylinder. This is essential for analytical instruments where even minor fluctuations in carrier gas pressure can skew results or disrupt calibration. By stepping down the pressure in two stages, the regulator isolates the final delivery pressure from the variables of the supply cylinder.

Material Integrity and Purity

To ensure the integrity of the gas stream, this regulator features a stainless steel diaphragm. Unlike elastomeric diaphragms that can off-gas or absorb contaminants, stainless steel provides a non-reactive barrier that preserves the purity of the gas. This is complemented by a filtered seat that prevents particulate contamination, extending the service life of the seat and ensuring consistent performance. The body, bonnet, and gauges are plated to provide superior protection against environmental corrosion and to maintain a clean, professional appearance suitable for laboratory settings.

Safety and Versatility

Safety is paramount in high-pressure gas handling. The Miller Smith 222-00-09 includes a built-in capturable preset safety relief valve, which protects the regulator components and downstream equipment from over-pressurization. The unit is also designed to withstand vacuums generated during purging operations, making it highly versatile for complex gas management systems. With a CGA 580 inlet, it is compatible with standard inert gas cylinders (Nitrogen, Argon, Helium) and delivers a precise pressure range of 0-100 PSI via a 1/4" FNPT outlet connection.