256-8208 - Miller Smith 250 Series Silverline Liquid Cylinder Regulator CGA 540 500 PSI

High Purity Analytical Liquid Cylinder Regulator

The Miller Smith 256-82-08 is a premium offering from the Silverline 250 Series, engineered specifically for the rigorous demands of high-purity gas handling and liquid cylinder applications. This single-stage regulator distinguishes itself with a robust construction designed to maintain gas purity and ensure precise pressure control, even in challenging cryogenic environments. The unit features a rear-entry inlet connection, optimizing the physical configuration for direct mounting onto liquid cylinders (dewars), thereby reducing strain on connections and improving the overall safety profile of the setup.

Central to the performance of the 256-82-08 is the large 1-7/8 inch stainless steel diaphragm. Unlike elastomeric diaphragms that can stiffen or degrade under the low temperatures associated with cryogenic gas withdrawal, the stainless steel construction maintains flexibility and responsiveness, ensuring a stable delivery pressure of 0-500 PSIG. This material choice also minimizes off-gassing, preserving the analytical purity of the gas stream. The regulator is equipped with a CGA 540 connection, making it suitable for oxygen service and other compatible high-purity gases requiring this standard fitting.

Durability is a key focus of the Silverline series. The entire body, bonnet, and gauge cases are nickel-plated. This plating provides exceptional resistance to corrosion and environmental wear, significantly extending the service life of the regulator in laboratory or industrial settings. Internally, Miller Smith's exclusive Sure-Seat™ technology utilizes a filtered seat design to prevent particulate contamination from entering the high-pressure seating area. This feature is critical for reducing repair costs and downtime, as seat failure is a common mode of failure in standard regulators. The unit also includes large 2-1/2 inch single-scale gauges, allowing operators to monitor cylinder and delivery pressure accurately from a distance.