620-03030000 - Miller Smith 620 Series High Purity Two-Stage Regulator, CGA 326, 0-25 PSI

Precision Control for Analytical Applications

The Miller Smith 620 Series Silverline High Purity Brass Two-Stage Regulator is engineered for applications demanding the highest levels of gas stream purity and pressure stability. Designed specifically for non-corrosive specialty gases, this regulator features a robust nickel-plated brass bar stock body that ensures durability while maintaining a pristine flow path. The heart of the 620 Series is its unique 316 stainless steel diaphragm, which provides exceptional sensitivity and accuracy in pressure regulation. Unlike standard regulators that may use elastomeric seals, this unit utilizes a metal-to-metal body-to-diaphragm seal, significantly reducing the risk of outgassing and contamination, making it a preferred choice for gas chromatography and other sensitive analytical techniques.

Two-Stage Stability

One of the critical challenges in precision gas delivery is the 'decay' effect, where outlet pressure rises as the cylinder pressure falls. The 620 Series employs a true two-stage design that eliminates this issue, providing a constant delivery pressure of 0-25 PSI regardless of fluctuations in the inlet supply (up to 3500 PSI). This feature allows operators to utilize the full content of a gas cylinder without constant manual adjustments, ensuring process consistency and efficiency.

Safety and Versatility

Safety is paramount in laboratory environments. The 620 Series includes captured vent ports (1/16" FNPT) on the bonnet, allowing users to pipe potential leaks away from the workspace—a critical feature when handling hazardous or asphyxiating gases. Additionally, the regulator is designed to withstand internal vacuums, making it compatible with purge cycles essential for maintaining system purity. With threaded bonnets for panel mounting and a CGA 326 connection typically used for Nitrous Oxide, this regulator is a versatile and reliable component for sophisticated gas delivery systems.