120-2008 - Miller Smith Silverline 120 Series Two-Stage Oxygen Regulator 0-15 PSI CGA 540

Technical Overview: Miller Smith 120-20-08 Silverline Regulator

The Miller Smith 120-20-08 is a precision-engineered two-stage regulator from the renowned Silverline 120 Series. Designed for applications requiring absolute stability in delivery pressure, this unit excels in environments where cylinder pressure decay would typically cause output fluctuations in single-stage counterparts. By utilizing a two-stage reduction mechanism, the regulator first drops the high inlet pressure to an intermediate level before reducing it to the final delivery pressure. This architecture ensures that the outlet pressure remains constant at the set point (0-15 PSIG) throughout the life of the cylinder, making it ideal for laboratory, analytical, or precise industrial applications.

Constructed from rugged brass bar stock, the body and bonnet are plated to provide enhanced corrosion resistance and a professional aesthetic. The internal design features Miller's Sure-Seat technology, which incorporates a filtered seat to prevent debris from entering the high-pressure seating area, significantly extending the component's lifespan and maintaining gas purity. The unit is equipped with a large 1-7/8 inch diaphragm, which provides exceptional sensitivity and control, particularly important for the low 0-15 PSIG delivery range.

This specific model is configured with a CGA 540 inlet connection, designating it for Oxygen service. While the Silverline series is generally capable of handling various inert gases, the installed CGA fitting dictates the specific gas compatibility for safety and compliance. The regulator includes large, easy-to-read 2-1/2 inch single scale gauges and is tapped for rear panel mounting, offering versatility for bench or panel installations. With a maximum inlet pressure rating of 3500 PSIG, it is compatible with standard high-pressure cylinders.