221-0007 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator CGA 510

Precision Engineering for Analytical Accuracy

The Miller Smith 221-00-07 Silverline High Purity Analytical Two Stage Regulator is engineered to meet the rigorous demands of laboratory and analytical applications. Part of the renowned 220 Silverline Series, this regulator is specifically designed for high purity, non-corrosive pure gases and mixtures where maintaining gas stream integrity is paramount. The core of its performance lies in its two-stage design, which provides a constant delivery pressure regardless of fluctuations in the cylinder pressure. This feature is critical for applications requiring a stable baseline, such as gas chromatography, where even minor pressure deviations can affect analytical results.

Advanced Material Construction

To ensure the highest level of purity, the 221-00-07 utilizes a stainless steel diaphragm. Unlike elastomeric diaphragms that can off-gas or absorb impurities, stainless steel provides a non-contaminating seal that preserves the quality of the gas stream. This metal-to-metal integrity is essential for controlling carrier gases or calibration mixtures. The regulator body, bonnet, and gauges are fully plated, offering superior protection against environmental corrosion and maintaining a clean, professional appearance suitable for laboratory settings. The rugged brass bar stock construction provides a solid foundation, ensuring the device can withstand the physical demands of cylinder changeouts and daily operation.

Operational Reliability and Safety

The regulator features a filtered seat design that traps particulates before they can damage the seating surface, significantly extending the service life of the unit and maintaining leak-tight performance. For safety, a built-in capturable preset safety relief valve is integrated to protect downstream equipment from over-pressurization. The unit is also capable of withstanding vacuums generated during purging operations, making it versatile for complex gas management systems. With large, easy-to-read 2-1/2 inch single scale gauges, operators can monitor cylinder and delivery pressures with precision. The CGA 510 connection and 0-60 PSIG delivery range make it an optimal choice for specific hydrocarbon and specialty gas applications requiring exacting control.