222-4000 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator, 0-100 PSI, 1/4 FNPT

Precision Control for Analytical Applications

The Miller Smith 222-40-00 Silverline High Purity Analytical Two Stage Regulator is engineered for environments where gas purity and pressure stability are paramount. Designed specifically for non-corrosive high purity gases and mixtures, this regulator is an essential tool for laboratories utilizing gas chromatography, thermal conductivity, flame ionization, and other sensitive analytical techniques.

At the heart of the 222-40-00 is a stainless steel diaphragm. Unlike standard rubber diaphragms, stainless steel prevents off-gassing and absorption, ensuring that the gas stream remains uncontaminated as it passes through the regulator. This feature is critical for maintaining the integrity of carrier gases and calibration mixtures. Additionally, the regulator features a filtered seat which further enhances gas stream purity while extending the service life of the internal components by preventing debris from damaging the seat.

The two-stage design of the Silverline series provides superior performance over single-stage alternatives. By reducing pressure in two steps, the regulator maintains a constant delivery pressure of 0-100 PSI regardless of fluctuations in the inlet cylinder pressure. This means you can run your cylinders from full to nearly empty without constantly adjusting the regulator knob to compensate for the "decay" effect seen in single-stage models.

Durability meets precision with a rugged brass bar stock construction that is fully plated—including the body, bonnet, and gauges—offering superior protection against the environment. The large 2-1/2 inch gauges are easy to read, ensuring accurate monitoring of both cylinder and delivery pressures. Safety is also prioritized with a built-in capturable preset safety relief valve and the ability to withstand vacuums generated during purging operations.