220-2006 - Miller Smith 220 Series Silverline High Purity Two-Stage Regulator, CGA 350

Precision Control for Analytical Applications

The Miller Smith 220-20-06 Silverline High Purity Analytical Two Stage Regulator is engineered specifically for the rigorous demands of laboratory and analytical environments. Designed to manage non-corrosive pure gases and mixtures, this regulator is a staple for professionals utilizing gas chromatography methods such as thermal conductivity, flame ionization, flame photometry, and electron capture. The core of its performance lies in its two-stage design, which provides a consistent delivery pressure from a full cylinder down to nearly empty, eliminating the need for constant manual adjustments and ensuring baseline stability in sensitive instruments.

Purity is paramount in analytical work, and the 220 Series addresses this with a stainless steel diaphragm. Unlike rubber or neoprene diaphragms, stainless steel prevents off-gassing and absorption, ensuring the gas stream remains uncontaminated. Additionally, a filtered seat mechanism traps particulates, further enhancing gas purity and extending the service life of the regulator seat. The unit is also designed to withstand vacuums, making it suitable for systems that require purging operations before use.

Constructed from rugged brass bar stock, the body, bonnet, and gauges are fully plated to offer superior protection against environmental corrosion and to maintain a clean aesthetic suitable for lab settings. The regulator features a CGA 350 inlet connection, typically used for flammable gases like Hydrogen or Methane, and includes a 1/4" MNPT needle valve for precise flow control. With a delivery range capable of handling vacuum (30" HG) up to 30 PSIG, it offers versatility for various low-pressure analytical needs.