621-00020000 - Miller Smith Silverline 620 Series High Purity Two-Stage CO2 Regulator, 0-60 PSI

Precision Control for High Purity Applications

The Miller Smith 621-00-02-00-00 Silverline High Purity Brass Two-Stage Regulator is engineered for professionals who demand exacting standards in gas delivery. Part of the renowned 620 Silverline Series, this regulator is specifically designed for non-corrosive gases, such as Carbon Dioxide (CGA 320), where maintaining gas purity and stable pressure is critical. Unlike standard industrial regulators, the Silverline series features a stainless steel diaphragm that provides a metal-to-metal seal with the body. This construction eliminates the use of rubber or elastomeric diaphragms that can off-gas and contaminate sensitive analytical streams, ensuring that the gas quality remains uncompromised from the cylinder to your instrument.

The two-stage design is a standout feature for laboratory and analytical environments. In single-stage regulators, the outlet pressure can fluctuate as the cylinder drains—a phenomenon known as the decaying inlet characteristic. This Miller Smith regulator solves that problem by reducing pressure in two steps, guaranteeing a constant delivery pressure of 0-60 PSI regardless of inlet pressure fluctuations up to 3500 PSI. This stability is essential for chromatography, laser mixtures, and other precision applications.

Constructed from nickel-plated brass bar stock, the body is both durable and aesthetically professional. It includes a 316 stainless steel filter to protect the seat from particulate damage, extending the service life of the unit. Safety is also paramount; the regulator features capturable vents (1/16" FNPT) on the bonnet, allowing hazardous or asphyxiating gases to be piped away safely in the event of a diaphragm failure. With threaded bonnets for easy panel mounting, this regulator integrates seamlessly into gas management systems.