256-0009 - Miller Smith 250 Series Silverline High Purity Liquid Cylinder Regulator CGA 580

Technical Overview of the Miller Smith 256-00-09 Silverline Regulator

The Miller Smith 256-00-09 is a premium high-purity analytical regulator from the 250 Silverline Series, specifically engineered for use with liquid cylinders. This single-stage regulator features a CGA 580 inlet connection, making it suitable for inert gases such as Argon, Nitrogen, and Helium typically found in bulk gas distribution systems. The unit is designed with a rear-entry (back mount) configuration, which provides optimal orientation when connecting directly to the gas use port of a liquid cylinder, minimizing strain on piping and improving accessibility.

At the core of this regulator is a large 1-7/8 inch stainless steel diaphragm. Unlike neoprene or rubber diaphragms, stainless steel provides a non-permeable barrier that preserves the purity of the gas stream, a critical requirement for analytical and laboratory applications. Furthermore, the stainless steel construction is essential for cryogenic applications where cold gas temperatures could embrittle elastomeric components. The diaphragm works in conjunction with Miller Smith's exclusive Sure-Seat™ technology. This filtered seat design prevents particulate contamination from entering the high-pressure seating area, significantly reducing the risk of seat failure, creep, and costly downtime.

The external construction is equally robust, featuring a rugged brass bar stock body, bonnet, and gauges that are fully nickel-plated. This plating offers superior protection against corrosion, extending the service life of the equipment in harsh industrial or laboratory environments. The regulator is equipped with large 2-1/2 inch single-scale gauges that are easy to read from a distance, ensuring operators can monitor cylinder and delivery pressure accurately. With a maximum inlet pressure rating of 3500 PSI and a delivery range of 0-500 PSI, this unit provides precise control for high-pressure requirements. It also includes a built-in capturable preset safety relief valve to protect downstream equipment from over-pressurization.