321-00240000 - Miller Smith 320 Series High Purity SS Regulator, 2-Stage, CGA 580, 50 PSI

High Purity Precision for Critical Applications

The Miller Smith 321-00-24-00-00 is a premium high-purity, two-stage regulator from the renowned 320 Silverline Series. Engineered for applications requiring absolute gas integrity and precise pressure control, this regulator is constructed from 316 stainless steel bar stock. This material choice makes it an exceptional solution for both corrosive environments and high-purity inert gas delivery where off-gassing or contamination from standard brass components is unacceptable. The unit features a CGA 580 inlet, making it compatible with standard inert gas cylinders such as Nitrogen, Argon, and Helium.

At the core of this regulator is a convoluted stainless steel diaphragm that provides sensitive pressure response and stable flow control. Unlike standard regulators that may rely on elastomeric seals, the 320 Series utilizes a metal-to-metal diaphragm seal, ensuring maximum leak integrity—a critical feature when handling expensive high-purity gases or hazardous media. The two-stage architecture is essential for processes requiring constant delivery pressure; it automatically compensates for the drop in cylinder pressure as the gas is consumed, eliminating the need for frequent manual adjustments.

Safety and longevity are built into the design. A 316 stainless steel filtered seat protects the internal mechanism from particulate damage while maintaining gas stream purity. Additionally, the bonnet features a captured vent port (1/16" FNPT), allowing operators to pipe vented gases away safely in the event of a diaphragm failure. This regulator is also designed to withstand internal vacuums, making it compatible with rigorous purging operations required during cylinder change-outs.