Regulator Air Inlet Size 1/4 in Air Inlet Type NPT Maximum Flow Rate 72.6 scfm Maximum Operating Pressure 145 psig Maximum Operating Temperature 122 Degrees F Pressure Gauge Included Yes Overall Width 2 in Series 651 Air Inlet Gender Female Body Material Aluminum For Fluid Type Air/Inert Gas For Substance Type Air Minimum Operating Pressure 7 psig Minimum Operating Temperature -4 Degrees F