Airgas Model C445D330 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threadless Seat Two Stage The needle valve model has

The needle valve model has the valve built into the regulator body reducing the gas path

Regulators are adjusted easily by removing the knurled nut and turning the screw to alter the tension on the diaphragm

Certified crashworthy to NCHRP-350

Material: Steel

Airgas Model C445D330 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threadless Seat Two Stage The needle valve model hasThis series of 316 stainless steel two stage high purity regulators is designed for non corrosive analytical, mildly corrossive and process applications requiring precise, stable delivery pressure control. The two stage design yields a delivery pressure change of less than 0. 01 100 psi inlet change. Convoluted Hastelloy C 22 diaphragms provide excellent regulating characteristics and allow for internal vacuum purging. The metal to metal diaphragm