Norgren® by Dixon® Regulator, High Flow Jumbo Relieving, Series: Series 1 R17, 1 in PTF Port, 480 scfm, 5 to 125 psi Pressure, 175°F, Aluminum Body Norgren® by Dixon® R17-800RG High Flow Jumbo Relieving Regulator with GC230 Gauge, 1 in PTF, 480 scfm Flow Rate, 5 to 125 psi Pressure