620-00080000 - Miller Smith 620 Series Silverline High Purity Two-Stage Regulator, CGA 540, 0-30 PSI

Precision Control for Specialty Gases

The Miller Smith 620 Silverline High Purity Brass Two Stage Regulator is engineered for professionals who demand uncompromising accuracy and purity in their gas delivery systems. Designed specifically for non-corrosive specialty gases, this regulator is a staple in laboratory environments, analytical testing facilities, and precision industrial applications. The 620 Series distinguishes itself with a robust two-stage design, which provides a constant outlet pressure regardless of fluctuations in the inlet pressure. This feature is essential for long-duration processes where cylinder decay would otherwise affect flow rates and pressure stability.

At the heart of this regulator is a specially designed stainless steel diaphragm. Unlike standard rubber diaphragms that can off-gas and contaminate sensitive samples, the stainless steel construction ensures the integrity of the gas stream is maintained from the cylinder to the instrument. The metal-to-metal seal between the body and the diaphragm further reinforces this purity, creating a leak-tight barrier without the use of gaskets that could degrade over time. The body itself is machined from brass bar stock and finished with nickel plating, offering a clean, professional appearance and enhanced resistance to environmental corrosion.

Safety and versatility are also key components of the 620-00-08-00-00. The unit features a capturable vent in the bonnet (1/16" FNPT), allowing users to pipe away vented gases safely—a critical requirement when working with certain specialty mixtures. Additionally, the regulator is designed to withstand internal vacuums, making it compatible with purging operations necessary for maintaining system cleanliness. With a delivery range of 30" HG to 30 PSI and a maximum inlet pressure of 3500 PSI, this regulator offers the versatility needed for a wide range of low-pressure applications.