621-02020000 - Miller Smith 620 Silverline High Purity Two-Stage Regulator CGA 320

Precision High Purity Gas Regulation

The Miller Smith 621-02-02-00-00 Silverline High Purity Brass Two Stage Regulator is engineered for applications demanding the utmost precision and gas purity. Part of the renowned 620 Silverline Series, this regulator is specifically designed for non-corrosive specialty gases, utilizing a CGA 320 connection commonly used for Carbon Dioxide (CO2). The core of its performance lies in its two-stage design, which provides a constant outlet pressure regardless of fluctuations in the inlet pressure, ensuring stable flow rates throughout the life of the cylinder.

Constructed from nickel-plated brass bar stock, the body is both durable and resistant to diffusion, maintaining the integrity of the gas stream. The regulator features a unique stainless steel diaphragm that delivers maximum accuracy and stable regulation. A critical feature for high-purity applications is the metal-to-metal seal between the body and the diaphragm, which eliminates the need for elastomeric seals that can outgas or degrade over time. Additionally, the seat is filtered, and a 316 stainless steel filter is incorporated to further protect the gas stream from particulate contamination.

Safety and versatility are also key components of the 621-02-02-00-00. It includes capturable 1/16" FNPT vent ports on both stages, allowing for the safe venting of hazardous gases in the unlikely event of a diaphragm failure. The unit is capable of withstanding internal vacuums during purging operations, making it suitable for complex gas management systems. With threaded front and rear bonnets, this regulator is easily panel-mountable, fitting seamlessly into laboratory setups and analytical instruments.