223-2009 - Miller Smith Silverline 220 Series High Purity 2-Stage Regulator CGA 580

Precision Control for Analytical Applications

The Miller Smith 223-20-09 Silverline High Purity Analytical Two Stage Regulator is engineered for professionals who demand exacting standards in gas delivery. Designed specifically for high purity, non-corrosive pure gases and mixtures, this regulator is a staple in laboratories and industrial settings where consistency is paramount. The unit features a robust two-stage design, which is critical for applications requiring constant delivery pressure. Unlike single-stage counterparts, this regulator compensates for the drop in cylinder pressure as the gas is consumed, ensuring that your output remains stable from a full cylinder down to nearly empty.

Superior Construction and Purity

At the heart of the 223-20-09 is a stainless steel diaphragm. This material choice is deliberate, offering precise pressure control while eliminating the risk of off-gassing or contamination often associated with elastomeric diaphragms. This makes it ideally suited for controlling carrier gases or calibration mixtures used in sensitive gas chromatography techniques, such as thermal conductivity, flame ionization, flame photometry, and electron capture. The regulator also includes a filtered seat, which further enhances gas stream purity and extends the service life of the internal components by preventing debris ingress.

Durability and Safety

Built to withstand the rigors of daily use, the regulator boasts a rugged brass bar stock construction. To ensure longevity and resistance to environmental factors, the body, bonnet, and gauges are fully plated. The large 2-1/2 inch single scale gauges are easy to read, allowing for quick verification of cylinder and delivery pressures. Safety is also a priority, evidenced by the built-in capturable preset safety relief valve that protects components from over-pressurization. Additionally, the design is capable of withstanding vacuums generated during purging operations, adding to its versatility in complex gas setups.

Technical Specifications

This model comes equipped with a CGA 580 inlet connection, making it compatible with standard inert gas cylinders such as Nitrogen, Argon, and Helium. It offers a delivery pressure range of 0-150 PSI (often rated up to 200 PSI in some documentation, but optimized for the 150 PSI range) and can handle a maximum inlet pressure of 3500 PSI. The outlet is fitted with a 1/4" MNPT needle valve for fine flow adjustments.