221-0109 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator, CGA 580, 0-50 PSI

High Purity Precision for Analytical Applications

The Miller Smith 221-01-09 Silverline High Purity Analytical Two Stage Regulator is a premium instrument engineered for environments where gas purity and pressure stability are paramount. Designed as part of the esteemed 220 Silverline Series, this regulator is specifically tailored for controlling high purity, non-corrosive gases and mixtures. It is the ideal choice for sophisticated laboratory applications, including gas chromatography techniques such as thermal conductivity, flame ionization, flame photometry, and electron capture. The regulator's core strength lies in its two-stage design, which provides precise control from a full cylinder down to nearly empty, eliminating the pressure droop common in single-stage alternatives.

At the heart of the 221-01-09 is a stainless steel diaphragm. Unlike elastomeric diaphragms that can outgas or degrade, the stainless steel construction ensures that the gas stream remains uncontaminated, preserving the integrity of carrier gases and calibration mixtures. This metal-to-metal seal also enhances the precision of pressure regulation, allowing for minute adjustments within the 0-50 PSIG delivery range. Additionally, the regulator features a filtered seat that traps particulates, further ensuring gas stream purity and significantly extending the service life of the internal components.

Durability and safety are built into every aspect of the Miller Smith 221-01-09. The body, bonnet, and gauges are plated to resist corrosion and maintain a clean, professional appearance suitable for lab environments. The unit is capable of withstanding vacuums generated during purging operations, a critical feature for maintaining system purity. For operator safety, it includes a built-in capturable preset safety relief valve that automatically reseats after an over-pressure event. With large, easy-to-read 2-1/2 inch gauges and a standard CGA 580 inlet, this regulator combines user-friendly operation with the high-performance specifications required by analytical professionals.