623-20090000 - Miller Smith Silverline 620 Series High Purity 2-Stage Regulator, CGA 580, 0-250 PSI

Technical Overview

The Miller Smith 623-20-09-00-00 is a high-performance component of the Silverline 620 Series, specifically engineered for the regulation of non-corrosive specialty gases. As a two-stage regulator, it reduces cylinder pressure in two steps, providing an exceptionally stable delivery pressure that remains unaffected by the decay of inlet pressure as the cylinder empties. This characteristic is critical for analytical instruments, chromatography, and other laboratory applications where flow consistency is paramount.

Construction and Materials

Manufactured from high-quality brass bar stock and finished with nickel plating, the body offers excellent durability and resistance to environmental corrosion. The regulator features a unique stainless steel diaphragm that creates a metal-to-metal seal with the body, eliminating the need for elastomeric seals that can outgas and contaminate high-purity streams. A 316 stainless steel filter is integrated into the seat assembly to trap particulates, further ensuring the integrity of the gas supply.

Performance Specifications

This model is configured with a CGA 580 inlet connection, suitable for inert gases such as Nitrogen, Argon, and Helium. It supports a maximum inlet pressure of 3500 PSI and provides a delivery pressure range of 0-250 PSI. The outlet is equipped with a 1/4-inch Male NPT connection featuring a needle valve, allowing for fine-tuned flow adjustments directly at the regulator. Safety features include a capturable vent in the bonnet (1/16-inch FNPT), allowing hazardous gases to be piped away in the event of a diaphragm failure, although this specific model is intended for inert gas use.

Application Suitability

The 623-20-09-00-00 is designed to withstand internal vacuums, making it suitable for purging operations. Its robust construction and precise regulation capabilities make it an industry standard for high-purity gas delivery systems requiring reliable performance up to 250 PSIG.