Primefit R3802G Intermediate Air Regulator with Steel-Protected Gauge at 100-PSI, 3/8-Inch NPT Locking air regulator for precisely regulating and maintaining constant air pressure Accurate downstream air pressure regulation between 1 and 145-psi High impact locking composite regulator knob and steel protected gauge 80-Scfm at 100-PSI with 3/8-Inch NPT ports Comes with a 1-year limited warranty