Airgas Model 305C590 Brass-Plated Bar Stock Noncorrosive Gas Single Stage Regulator With CGA-590 Connection Single Stage they are provided with a

they are provided with a 1/4" FNPT inlet port

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Airgas Model 305C590 Brass-Plated Bar Stock Noncorrosive Gas Single Stage Regulator With CGA-590 Connection Single Stage they are provided with aThese economical plated brass cylinder regulators are specially suited for use in applications and environments requiring both high reliability and diffusion resistance. Sensitive, extra long life stainless steel diaphragms ensure high purity and leak integrity of specialty gases. The cartridge valve design with integral filter protects the regulator seat from particulate contamination and makes servicing simple and cost effective. Two stage design