220-8205 - Miller Smith 220 Silverline High Purity Two-Stage Regulator, CGA 346, 30" Hg-30 PSIG

Technical Overview of the Miller Smith 220 Silverline Regulator

The Miller Smith 220-82-05 is a premium High Purity Analytical Two-Stage Regulator designed for applications demanding rigorous stability and cleanliness. Part of the renowned Silverline series, this regulator is engineered to manage non-corrosive pure gases and mixtures with exceptional precision. The core of its performance lies in the two-stage reduction mechanism, which steps down cylinder pressure in two phases. This architecture ensures that the delivery pressure remains constant throughout the life of the cylinder, eliminating the "decay" often seen in single-stage counterparts as the inlet pressure drops.

Construction materials are selected for minimal outgassing and maximum durability. The diaphragm is constructed from stainless steel, a critical feature for maintaining the purity of the gas stream and preventing the absorption or release of contaminants that can occur with elastomeric diaphragms. The body, bonnet, and gauges are plated to resist corrosion and maintain a clean laboratory aesthetic. The seat assembly includes a filter to trap particulates, further protecting the seat integrity and extending the service life of the unit.

This specific model features a CGA 346 inlet connection and delivers a pressure range from 30 inches Hg vacuum up to 30 PSIG, making it versatile for various low-pressure analytical needs. It is rated for a maximum inlet pressure of 3500 PSIG. The unit also incorporates a built-in capturable preset safety relief valve, adding a layer of safety by venting over-pressure away from the user and equipment. The regulator is robust enough to withstand vacuums generated during system purging, a common procedure in high-purity gas handling.