320-66310000 - Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator, CGA 705, 0-25 PSI

Precision Control for High Purity Applications

The Miller Smith 320-66-31-00-00 High Purity Corrosion Resistant Stainless Steel Two Stage Regulator is an elite solution designed for the rigorous demands of specialty gas delivery. Engineered for environments where gas purity and precise pressure control are non-negotiable, this regulator belongs to the esteemed 320 Silverline Series. It is specifically constructed to handle both corrosive and non-corrosive gases, making it a versatile asset for laboratory, analytical, and industrial applications.

At the core of this regulator is its 316 Stainless Steel construction. Unlike standard brass regulators, the 316 SS body and wetted parts provide superior resistance to chemical attack, ensuring that the regulator does not degrade when exposed to harsh gases. This material choice also prevents the leaching of contaminants into the gas stream, preserving the integrity of high-purity gases used in chromatography or semiconductor manufacturing. The seat is further protected by a 316 stainless steel filter, which enhances service life by preventing particulate damage.

Advanced Two-Stage Design

Stability is the hallmark of the 320 Series. As a two-stage regulator, it reduces cylinder pressure in two steps, resulting in a constant delivery pressure of 0-25 PSI regardless of fluctuations in the inlet pressure. This means that as your gas cylinder empties and its internal pressure drops, the output pressure to your instrument or process remains rock-steady, eliminating the need for constant manual adjustments.

Safety and Integrity

Safety is paramount when handling hazardous gases. This model features a metal-to-metal diaphragm seal, which offers maximum leak integrity compared to elastomeric seals that can degrade over time. Furthermore, the bonnet is equipped with captured vent ports (1/16" FNPT), allowing operators to pipe vented gases away to a safe location in the rare event of a diaphragm failure. The regulator is also designed to withstand internal vacuums, making it compatible with purge cycles essential for changing out cylinders of reactive gases.