252-0008 - Miller Smith 250 Series High Purity Oxygen Regulator CGA 540

High Purity Analytical Liquid Cylinder Regulator

The Miller Smith 252-00-08 Silverline High Purity Analytical Liquid Cylinder Regulator is a precision-engineered instrument designed to meet the rigorous demands of analytical laboratories and high-purity gas distribution systems. Part of the esteemed 250 Silverline Series, this single-stage regulator is specifically configured for use with liquid cylinders, featuring a back-mount inlet connection that simplifies installation and ensures a secure fit in tight configurations often found in cryogenic setups.

At the heart of this regulator is a large 1-7/8 inch stainless steel diaphragm. Unlike elastomeric diaphragms, stainless steel provides superior resistance to gas absorption and outgassing, ensuring that the purity of the gas stream is maintained from the cylinder to the point of use. This makes the 252-00-08 an ideal choice for applications where maintaining gas integrity is critical. The diaphragm's large surface area also affords exceptional sensitivity, allowing for precise control of delivery pressure within the 0-100 PSIG range, even as cylinder pressure fluctuates.

Durability and longevity are key components of the Silverline Series design. The regulator body, bonnet, and gauges are constructed from rugged brass bar stock and finished with a high-quality nickel plating. This plating not only enhances the aesthetic appeal but, more importantly, provides robust protection against corrosion. In cryogenic applications, where cold temperatures can cause condensation and moisture buildup, this corrosion resistance is vital for extending the service life of the equipment. Furthermore, Miller Smith's exclusive Sure-Seat™ filtered seat technology is integrated into the high-pressure seat assembly. This filtration system prevents microscopic particles and contamination from entering the seating area, a common cause of regulator failure and creep, thereby reducing downtime and repair costs.

Safety and ease of use are also prioritized. The regulator includes a built-in capturable preset safety relief valve to protect downstream equipment from over-pressurization. The large 2-1/2 inch single scale gauges are designed for high visibility, allowing operators to monitor cylinder and delivery pressure easily from a distance. With a maximum inlet pressure rating of 3500 PSIG and a CGA 540 connection, this regulator is perfectly suited for oxygen and other compatible high-purity gas services derived from liquid cylinders.