Booster Regulator, Air Inlet Size 1/2 in, Air Inlet Type NPT, Maximum Flow Rate 67.1 scfm, Maximum Operating Pressure 145 psi, Maximum Operating Temperature 122 Degrees F, Pressure Boost Ratio 2, Includes Pressure Gauge, Silencer, Air Outlet Size 1/2 in, Air Outlet Type NPT, Material Carbon Steel, Minimum Operating Pressure 29 psi, Minimum Operating Temperature 35 Degrees F, Pressure Gauge Port Size 1/2