121-0003 - Miller Smith Silverline 2-Stage Regulator 0-60 PSI CGA 326

Precision Gas Control for Laboratory and Industrial Applications

The Miller Smith 121-00-03 Silverline Series General Purpose Two Stage Regulator is engineered to deliver unwavering performance in environments where precision and purity are paramount. Designed for use with inert and non-corrosive gases such as Air, Nitrogen, CO2, and Argon, this regulator features a robust CGA 326 inlet connection and provides a delivery pressure range of 0-60 PSI. As a member of the esteemed Silverline 120 Series, it embodies the high standards of manufacturing excellence that professionals expect from Miller Smith.

Superior Two-Stage Regulation

The defining feature of the 121-00-03 is its two-stage design. Unlike single-stage regulators that allow delivery pressure to rise as the cylinder pressure decays (a phenomenon known as the "decaying inlet characteristic"), this unit reduces pressure in two distinct steps. The first stage lowers the high-pressure gas from the cylinder to an intermediate level, while the second stage reduces it to the final working pressure. This configuration ensures a constant, stable flow rate and pressure output throughout the entire life of the cylinder, making it an ideal choice for laboratory analysis, calibration, and precision manufacturing processes where consistency is critical.

Advanced Sure-Seat Technology

Reliability is further enhanced by Miller's proprietary Sure-Seat technology. The regulator incorporates a filtered seat that actively prevents debris and particulate matter from entering the seating area. This innovation not only maintains the purity of the gas stream—essential for sensitive applications—but also significantly extends the service life of the regulator by reducing wear and tear on internal components. The large 1-7/8 inch diaphragm offers exceptional sensitivity, allowing operators to fine-tune pressure settings with ease.

Built for Longevity

Constructed from rugged brass bar stock, the body of the 121-00-03 is built to last. The body, bonnet, and gauges are plated to provide superior protection against corrosion and environmental damage. The unit also features large, easy-to-read 2-1/2 inch gauges and is tapped for rear panel mounting, offering versatile installation options for fixed systems or benchtop setups.