623-84060000 - Miller Smith Silverline 620 Series High Purity 2-Stage Regulator CGA 350

Precision Control for High Purity Applications

The Miller Smith 623-84-06-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for professionals who demand exacting standards in gas delivery. Part of the esteemed 620 Silverline series, this regulator is specifically designed for non-corrosive specialty gases where maintaining gas stream purity is paramount. The core of its performance lies in the unique stainless steel diaphragm, which provides superior sensitivity and accuracy compared to standard elastomeric diaphragms. This construction allows for a metal-to-metal seal between the body and the diaphragm, effectively eliminating the risk of contamination from outgassing components, a critical feature for analytical instrumentation and laboratory environments.

Functionally, the two-stage design is a significant advantage for processes requiring stable delivery pressure over long durations. As the cylinder pressure drops, single-stage regulators often experience a rise in outlet pressure; however, the 623-84-06-00-00 compensates for these inlet fluctuations, delivering a constant 0-250 PSI output. This stability is essential for chromatography, carrier gases, and other precision applications. The unit is constructed from nickel-plated brass bar stock, offering a robust yet clean aesthetic that resists environmental corrosion. Additionally, the regulator features a filtered seat to protect the internal mechanism from particulate damage, ensuring a long service life and reliable operation.

Safety and versatility are also key components of the design. The bonnet includes a capturable 1/16" FNPT vent, allowing users to pipe hazardous or flammable gases (common with CGA 350 connections like Hydrogen and Methane) away from the work area in the unlikely event of a diaphragm failure. The regulator is also capable of withstanding internal vacuums, making it suitable for purge cycles without damage. With a maximum inlet pressure of 3500 PSI and clear 2-1/2" single scale gauges, this Miller Smith regulator represents a top-tier solution for high-purity gas management.