222-4006 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 350

Miller Smith Silverline: The Standard for High Purity

When your operation requires more than just standard industrial grade regulation, the Miller Smith 222-40-06 Silverline Regulator steps up to deliver analytical-grade performance. Designed for professionals who manage specialty gases, this two-stage regulator ensures that your delivery pressure remains rock-steady, regardless of how much gas is left in the tank. This model comes equipped with a CGA 350 inlet, making it the correct choice for hydrogen, methane, and other compatible high-purity fuel gas mixtures often found in advanced welding, testing, and laboratory setups.

Built for Durability and Precision

Miller Smith is known for rugged reliability, and the Silverline 220 Series is no exception. The regulator is machined from brass bar stock and finished with a high-quality plating on the body, bonnet, and gauges. This not only looks great but provides a tough layer of protection against the wear and tear of daily use. Inside, a stainless steel diaphragm offers precise control over the 0-100 PSIG delivery range, ensuring that the diaphragm itself does not contaminate the gas stream—a common issue with standard neoprene diaphragms in high-purity applications.

Advanced Features for Professional Use

The 222-40-06 is packed with features designed to make your job easier and safer. It includes a filtered seat that blocks debris from entering the high-pressure seat assembly, a common cause of regulator failure. The unit is also capable of withstanding vacuums generated during purging operations, which is essential when swapping cylinders in high-purity lines to prevent air contamination. The included 1/4" FNPT outlet with a needle valve allows for precise flow control right at the regulator, giving you complete command over your gas delivery system.

Why Choose Two-Stage?

For applications like gas chromatography, thermal conductivity testing, or precise calibration, pressure fluctuation is not an option. A two-stage regulator functions as two regulators in one: the first stage reduces the high cylinder pressure to an intermediate level, and the second stage reduces it to your working pressure. This isolation means that as your cylinder pressure drops from 3500 PSI down to 500 PSI or lower, your output remains exactly where you set it, without the need for constant readjustment. Invest in the Miller Smith 222-40-06 for set-it-and-forget-it reliability.