Norgren® by Dixon® Excelon® Sub-Compact Regulator without Gauge, series: 1 Series R72, 3/8 in PTF, 70 scfm Flow Rate, 5 to 150 psi Pressure. Norgren® by Dixon® Excelon® R72G-3R 1 Series Sub-Compact Regulator without Gauge, 3/8 in PTF, 70 scfm, 5 to 150 psi Pressure