121-0009 - Miller Smith Silverline 2-Stage Inert Gas Regulator, 0-50 PSIG, CGA 580

Precision Control with Miller Smith Silverline Series

The Miller Smith 121-00-09 Silverline Series General Purpose Two Stage Regulator is engineered for professionals requiring consistent and precise gas control in laboratory, maintenance, and general plant applications. As part of the renowned Silverline 120 Series, this regulator distinguishes itself with a robust two-stage design. Unlike single-stage counterparts that allow delivery pressure to fluctuate as the cylinder empties, this two-stage mechanism maintains a steady output pressure throughout the entire life of the cylinder. This feature is critical for applications where pressure stability is paramount to the integrity of the work or analysis being performed.

Rugged Construction and Reliability

Built to withstand the rigors of industrial environments while maintaining laboratory-grade precision, the 121-00-09 features a body machined from rugged brass bar stock. To further enhance durability and resistance to corrosion, the body, bonnet, and gauges are fully plated. This protective plating ensures the regulator remains in peak condition even in challenging shop environments. Internally, the regulator utilizes Miller Smith's Sure-Seat technology. This filtered seat design protects the high-pressure seat from debris and contamination, significantly extending the service life of the component and ensuring gas stream purity.

Optimized for Inert Gases

This specific model is outfitted with a CGA 580 inlet connection, making it compatible with standard inert gas cylinders such as Argon, Nitrogen, and Helium. It is rated for a maximum inlet pressure of 3500 PSIG, accommodating high-pressure cylinders with ease. The delivery pressure range is calibrated for 0-50 PSIG (with gauges potentially reading slightly higher ranges for safety margins), providing fine control for low-to-medium pressure applications. The large 1-7/8 inch diaphragm acts as the heart of the regulation system, offering exceptional sensitivity to pressure changes and ensuring accurate delivery.

User-Friendly Design

Operators will appreciate the large 2-1/2 inch single-scale gauges that provide clear, easy-to-read pressure data at a glance. The ergonomic adjustment handle allows for smooth pressure setting changes. While designed for general purpose use, this regulator is not recommended for applications requiring ultra-high purity where inboard diffusion of air is a concern, but it excels in standard inert gas shielding, purging, and pneumatic applications.