111-2009 - Miller Smith Silverline 110 Series Single Stage Inert Gas Regulator CGA 580

Technical Overview of the Miller Smith 111-20-09 Silverline Regulator

The Miller Smith 111-20-09 is a distinguished component of the Silverline 110 Series, engineered specifically for general purpose applications involving inert and non-corrosive gases. This single-stage regulator is designed to handle a variety of gases including Air, Nitrogen, Carbon Dioxide (CO2), and Argon, making it a versatile tool for industrial maintenance and fabrication setups. The unit features a CGA 580 inlet connection, compatible with standard inert gas cylinders, and supports a maximum inlet pressure of 3500 PSI. The delivery pressure range is calibrated from 0 to 60 PSI, providing adequate control for most shielding gas and purging applications.

Structurally, the regulator is built from rugged brass bar stock, ensuring high tensile strength and resistance to mechanical deformation. To further enhance durability and resistance to environmental corrosion, the body, bonnet, and gauges are fully plated. A critical engineering feature of this model is the inclusion of a filtered seat. This filtration system is designed to trap particulate matter before it reaches the seating surface, thereby preserving gas stream purity and significantly extending the service life of the internal components. The regulator utilizes a large 1-7/8 inch diaphragm, which offers superior sensitivity and pressure stability compared to smaller diaphragm designs often found in economy regulators.

The 111-20-09 also incorporates Miller Smith's proprietary Sure-Seat technology. This design innovation optimizes the alignment and contact of the seat assembly, reducing wear and ensuring a positive seal even after extensive cycling. The unit is equipped with large, 2-1/2 inch single-scale gauges that provide clear visual indication of cylinder and delivery pressures. For installation flexibility, the body is tapped to accommodate rear panel mounting, allowing for integration into gas manifolds or fixed control panels. While this regulator provides excellent control for general applications, it is important to note that it is not intended for high-purity applications where inboard diffusion of air or outgassing of elastomeric components could compromise the process.