623-83090000 - Miller Smith 620 Series Silverline High Purity Two-Stage Regulator, CGA 580, 0-250 PSI

Precision Control for Specialty Gases

The Miller Smith 623-83-09-00-00 Silverline High Purity Brass Two-Stage Regulator is engineered for applications demanding the utmost precision and cleanliness. Designed specifically for non-corrosive specialty gases, this regulator ensures that your gas stream remains pure and your delivery pressure remains constant, regardless of fluctuations in the inlet pressure. This makes it an indispensable tool for laboratory environments, gas chromatography, and other analytical applications where stability is paramount.

At the heart of the 620 Silverline series is a unique stainless steel diaphragm. Unlike elastomeric diaphragms that can off-gas or degrade over time, the stainless steel construction provides a metal-to-metal seal with the body, eliminating potential contamination points. This design feature, combined with a filtered seat, ensures that the gas purity is maintained from the cylinder to your equipment. The regulator is also capable of withstanding internal vacuums, making it suitable for purging operations essential in high-purity systems.

Safety and durability are built into every aspect of this device. The body is machined from brass bar stock and nickel-plated to resist corrosion and wear. It features capturable vents in the bonnet (1/16" FNPT) for both stages, allowing for the safe venting of gases in the unlikely event of a diaphragm failure. With a maximum inlet pressure of 3500 PSI and a delivery range of 0-250 PSI, this regulator is versatile enough to handle a wide range of inert gas cylinders equipped with a CGA 580 connection.

Key Technical Benefits

• Constant Delivery Pressure: The two-stage mechanism compensates for the drop in cylinder pressure as it empties, providing a steady flow without the need for constant adjustment.


• High Purity Construction: Stainless steel diaphragm and metal-to-metal seals prevent contamination of the gas stream.


• Rugged Build: Nickel-plated brass bar stock body ensures longevity even in demanding industrial environments.