Norgren® by Dixon® Excelon® Relieving Compact Regulator with GC230 Gauge, series: 1 Series R73, 1/4 in PTF, 91 scfm Flow Rate, 5 to 150 psi Pressure. Norgren® by Dixon®R73G-2RG 1 Series Relieving Compact Regulator with GC230 Gauge, 1/4 in PTF, 91 scfm, 5 to 150 psi Pressure