Booster Regulator, Air Inlet Size 1/4 in, Air Inlet Type NPTF, Maximum Flow Rate 8.1 scfm, Maximum Operating Pressure 290 psi, Maximum Operating Temperature 122 Degrees F, Pressure Boost Ratio 2, Includes 2X Pressure Increased Ratio with Gauge PSI, Handle-Operated, Air Outlet Size 1/4 in, Air Outlet Type NPTF, Minimum Operating Pressure 29 psi, Minimum Operating Temperature 35 Degrees F