221-4210 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 590

Rugged Reliability for High Purity Needs

The Miller Smith 221-42-10 Silverline Regulator combines the legendary durability of Miller Smith equipment with the precision required for high-purity gas applications. Built from rugged brass bar stock and finished with a protective plating, this regulator is designed to withstand the daily rigors of industrial and laboratory environments while delivering laboratory-grade performance. It is the ideal solution for professionals who require absolute consistency in their gas delivery systems, whether for calibration, testing, or specialized welding atmospheres.

Advanced Two-Stage Performance

For applications where pressure stability is non-negotiable, the two-stage mechanism of the 221-42-10 is essential. By stepping down pressure in two intervals, this regulator eliminates the delivery pressure rise that typically occurs as a gas cylinder empties. This ensures that your downstream equipment receives a steady 0-50 PSI supply from a full 3500 PSI cylinder down to the last few pounds. The large, 2-1/2 inch single-scale gauges are easy to read at a glance, allowing operators to monitor tank levels and outlet pressure with accuracy.

Superior Contamination Control

Contamination is the enemy of high-purity processes. The Miller Smith 221-42-10 addresses this with a stainless steel diaphragm that provides a metal-to-metal seal, offering precise control without introducing impurities into the gas stream. A filtered seat further enhances purity by trapping particulates and extending the service life of the regulator. Whether you are setting up a laser mix, a purge station, or an analytical instrument, this regulator provides the clean, consistent flow you need. The CGA 590 inlet connection ensures compatibility with standard cylinders for sulfur hexafluoride, industrial air, and other compatible specialty gases.