McMaster 60115K641 Wilkerson Air Regulator, Series R18, 1 2 NPT G2854546 This set includes a full This set includes a full assortment of the most common hex and TORX sizes in varying lengths FM approved valves are used in fire suppression systems 1 2 NPT Female Maximum Flow Rate @ Pressure 201 scfm @ 100 psi Pressure Regulation 2 psi to 125 psi Maximum Pressure 250 psi Maximum Temperature 150° F Regulating Accuracy ±3% Overall Width 2 3 8" Overall Height 5 3 8" Gauge Included Yes Country of Origin China DFARS Compliance Specialty Metals COTS Exempt ECCN EAR99 Schedule B Number 848110 Regulate the pressure of your compressed air supply