255-8208 - Miller Smith 250 Series Silverline Liquid Cylinder Regulator, CGA 540, 0-350 PSI

High Purity Analytical Regulation

The Miller Smith 255-82-08 Silverline High Purity Analytical Liquid Cylinder Regulator is a precision-engineered instrument designed to meet the rigorous demands of laboratory and specialty gas applications. Part of the esteemed 250 Silverline series, this single-stage regulator is constructed from rugged brass bar stock that has been fully nickel-plated. This plating extends to the bonnet and gauges, providing superior protection against corrosion and maintaining the aesthetic and functional integrity of the unit in demanding environments. The regulator is specifically configured with a rear-entry CGA 540 connection, optimizing it for direct mounting onto liquid cylinders (dewars) where orientation and space are critical factors.

At the core of this regulator's performance is a large 1-7/8 inch stainless steel diaphragm. Unlike elastomeric diaphragms that can become brittle or lose flexibility under the low temperatures associated with cryogenic gas boil-off, the stainless steel diaphragm ensures consistent, precise pressure control and extended service life. It effectively manages the transition from liquid source to gas phase delivery without compromising stability. The unit provides a delivery pressure range of 0-350 PSIG, making it versatile for various high-pressure analytical needs. Safety and longevity are further enhanced by Smith's exclusive Sure-Seat™ technology. This filtered seat design prevents particulate contamination from entering the seating area, a common cause of regulator failure and creep, thereby reducing maintenance costs and downtime.

The 255-82-08 is equipped with large 2-1/2 inch single-scale gauges that provide clear, unambiguous readings even from a distance. The outlet connection is a standard 9/16"-18 RH male fitting, compatible with standard oxygen and inert gas hoses. With a maximum inlet pressure rating of 3500 PSIG and a built-in capturable preset safety relief valve, this regulator represents a robust solution for bulk gas distribution and high-purity gas handling where reliability is paramount.