254-2008 - Miller Smith 250 Series Silverline High Purity Oxygen Regulator CGA 540

High Purity Analytical Liquid Cylinder Regulator

The Miller Smith 254-20-08 Silverline High Purity Analytical Liquid Cylinder Regulator is a precision instrument engineered for the demanding requirements of laboratory and industrial gas delivery. Part of the esteemed 250 Silverline Series, this single-stage regulator is specifically designed to manage gas withdrawal from liquid cylinders, ensuring a stable and contaminant-free flow. The unit features a CGA 540 inlet connection, making it suitable for oxygen and other compatible high-purity gases, and offers a delivery pressure range of 0-200 PSIG.

At the core of this regulator's performance is a large 1-7/8 inch stainless steel diaphragm. Unlike elastomeric diaphragms, stainless steel provides superior sensitivity and maintains integrity under the extreme temperature fluctuations often associated with cryogenic gas applications. This ensures precise control of outlet pressure even as the cylinder pressure varies. The regulator is constructed from rugged brass bar stock but is fully nickel-plated—including the body, bonnet, and gauges. This plating offers exceptional resistance to corrosion, maintaining the unit's aesthetic and functional quality over a long service life.

A critical feature of the 254-20-08 is Smith's exclusive Sure-Seat™ technology. This filtered seat design prevents particulate contamination from entering the high-pressure seating area, a common cause of regulator failure. By protecting the seat, maintenance costs and downtime are significantly reduced. The regulator is designed with a rear-entry (back mount) inlet, optimizing the orientation for connection to liquid cylinders (dewars) where side-entry regulators can be awkward or prone to damage. Large 2-1/2 inch single-scale gauges provide clear visibility of cylinder and delivery pressures from a distance, enhancing operational safety and convenience.

This regulator is strictly for controlling the delivery of gases, not liquids. It is equipped with a built-in capturable preset safety relief valve to protect downstream equipment from over-pressurization. With a maximum inlet pressure rating of 3500 PSIG, the Miller Smith 254-20-08 is a robust solution for high purity gas handling, bulk gas distribution, and analytical laboratory applications requiring reliable, clean gas delivery.