621-01080000 - Miller Smith 620 Series High Purity Oxygen Regulator, 2-Stage, 0-60 PSI, CGA 540

Precise Control for High Purity Applications

The Miller Smith 621-01-08-00-00 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 Oxygen (CGA 540), where maintaining gas purity and stable pressure is critical. The unit features a robust nickel-plated brass bar stock body that resists corrosion and wear, ensuring a long service life even in demanding industrial or laboratory environments.

Advanced Two-Stage Design

Unlike single-stage regulators that experience a rise in delivery pressure as the cylinder empties, this two-stage model provides a constant outlet pressure throughout the life of the cylinder. This feature is essential for analytical applications where pressure fluctuations can compromise results. The regulator supports a delivery range of 0-60 PSI and can handle a maximum inlet pressure of 3500 PSI, making it versatile for various high-pressure supply sources.

Superior Contamination Control

Gas purity is maintained through several design features. A 316 stainless steel filter and a filtered seat prevent particulate contamination from entering the gas stream. The unique stainless steel diaphragm utilizes a metal-to-metal seal with the body, eliminating the need for elastomeric seals that can outgas or degrade over time. Additionally, the regulator is capable of withstanding internal vacuums, allowing for effective purging operations without damaging the internal components.

Safety and Versatility

Safety is paramount in the design of the 621-01-08-00-00. It includes capturable vents in the bonnet (1/16" FNPT) for both stages, allowing hazardous gases to be piped away in the event of a diaphragm failure. The regulator also features threaded front and rear bonnets, facilitating secure panel mounting for fixed installations. Large 2-1/2 inch single scale gauges provide clear, easy-to-read pressure monitoring.