256-0008 - Miller Smith Silverline 250 Series High Purity Regulator 0-500 PSI CGA 540

Precision Control for Analytical Applications

The Miller Smith 256-00-08 Silverline High Purity Analytical Liquid Cylinder Regulator is engineered to meet the rigorous demands of laboratory and high-purity gas distribution environments. Part of the esteemed 250 Silverline Series, this single-stage regulator is specifically designed for use on liquid cylinders where maintaining gas purity and precise pressure control is paramount. The unit features a rear-entry (back mount) inlet configuration, which facilitates seamless connection to liquid cylinders without placing undue stress on the piping or the regulator body.

Advanced Material Construction

Constructed from rugged brass bar stock, the entire assembly—including the body, bonnet, and gauges—is nickel-plated. This plating serves a dual purpose: it provides an aesthetic, professional finish while significantly enhancing resistance to corrosion and environmental wear. At the heart of the regulator lies a large 1-7/8 inch stainless steel diaphragm. Unlike elastomeric diaphragms, stainless steel prevents off-gassing and absorption, ensuring that the purity of the gas stream remains uncompromised. This feature is critical for analytical applications where even trace contamination can skew results. The metal diaphragm also offers superior longevity in cryogenic applications where temperature fluctuations can degrade softer materials.

Exclusive Sure-Seat™ Technology

One of the standout features of the Miller Smith 256-00-08 is the exclusive Sure-Seat™ filtered seat technology. This design innovation incorporates a filter directly into the high-pressure seat assembly, preventing particulate contamination from entering the critical seating area. By blocking debris, the Sure-Seat™ mechanism drastically reduces the likelihood of seat failure, creep, and leakage, thereby extending the service life of the regulator and minimizing costly downtime and repairs.

Operational Specifications

This model is configured with a CGA 540 inlet connection, typically used for oxygen and other compatible inert gases, and provides a delivery pressure range of 0-500 PSIG. It is rated for a maximum inlet pressure of 3500 PSIG. The regulator is equipped with large 2-1/2 inch single-scale gauges that are easy to read from a distance, allowing operators to monitor cylinder and delivery pressures efficiently. A built-in capturable preset safety relief valve adds an extra layer of protection for personnel and equipment.