322-00000000 - Miller Smith 320 Series High Purity Two-Stage Stainless Steel Regulator, 0-100 PSI, 1/4" FNPT

Precision Control for High Purity Applications

The Miller Smith 320 Series High Purity Two-Stage Regulator is engineered to meet the rigorous demands of analytical laboratories, specialty gas handling, and industrial processes requiring absolute precision. Model 322-00-00-00-00 is specifically calibrated for a delivery range of 0-100 PSI, making it an ideal choice for applications where stable downstream pressure is critical. The regulator features a two-stage design, which is superior to single-stage alternatives in maintaining a constant delivery pressure even as the cylinder pressure drops. This characteristic is vital for chromatography, research instrumentation, and other sensitive processes where pressure fluctuation can compromise results.

Constructed from 316 stainless steel bar stock, the body and wetted parts offer exceptional resistance to corrosion, ensuring compatibility with a wide range of corrosive and non-corrosive gases. The seat is made from PCTFE, a material chosen for its durability and chemical resistance, further enhancing the unit's longevity in harsh chemical environments. A key feature of this regulator is its convoluted stainless steel diaphragm, which provides a metal-to-metal seal. This design eliminates the use of elastomers in the diaphragm seal, significantly reducing the risk of outgassing or contamination of the gas stream, and ensuring a leak integrity rate of 1 x 10^-9 cc/sec.

Safety is paramount when handling hazardous or toxic gases. The Miller Smith 320 Series addresses this with captured vent ports (1/16" FNPT) located in the bonnet. These ports allow users to pipe vented gases away to a safe discharge area in the unlikely event of a diaphragm failure. Additionally, the regulator is designed to withstand internal vacuums, making it suitable for purge cycles required during cylinder change-outs. The unit comes equipped with 1/4" FNPT inlet and outlet connections, providing flexibility for users to install specific CGA fittings or tube fittings as required by their specific system setup.