254-8208 - Miller Smith Silverline 250 Series High Purity Oxygen Regulator, CGA 540, 0-200 PSI

High Purity Analytical Regulation for Liquid Cylinders

The Miller Smith 254-82-08 Silverline High Purity Analytical Liquid Cylinder Regulator is a precision-engineered instrument designed to meet the rigorous demands of laboratory and analytical gas delivery systems. Part of the esteemed 250 Silverline series, this single-stage regulator is specifically configured for use with liquid cylinders, featuring a rear-entry (back mount) design that facilitates direct and ergonomic connection to cryogenic vessels. The unit is equipped with a CGA 540 inlet connection, making it suitable for high-purity oxygen and compatible gas service where maintaining stream integrity is paramount.

Constructed from rugged brass bar stock, the regulator body, bonnet, and gauges are fully nickel-plated. This plating serves a dual purpose: it provides an aesthetic, professional finish and, more importantly, offers superior protection against corrosion and environmental wear, which is critical in the often-harsh conditions surrounding cryogenic liquid cylinders. The internal architecture features 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 is preserved from the cylinder to the point of use. This makes the 254-82-08 an ideal choice for analytical applications where even trace contamination can compromise results.

A standout feature of this regulator is Smith's exclusive Sure-Seat™ technology. This filtered seat design actively prevents particulate contamination from entering the high-pressure seating area. By filtering out debris, the Sure-Seat mechanism significantly reduces the likelihood of seat failure, creep, and leakage, thereby lowering long-term repair costs and minimizing operational downtime. The regulator provides a delivery pressure range of 0-200 PSIG, controlled via a precise adjusting mechanism, and is rated for a maximum inlet pressure of 3500 PSIG. Operators will appreciate the large 2-1/2 inch single-scale gauges, which provide clear, legible readings even from a distance, enhancing safety and monitoring efficiency in busy laboratory or industrial environments.

This regulator is designed strictly for the control and delivery of gases withdrawn from the gas use valve of a liquid cylinder; it is not intended for liquid withdrawal. It includes a built-in capturable preset safety relief valve, adding an extra layer of protection for downstream equipment and personnel.