4ZM11-A Compressed Air Regulator, Air Inlet Size 1 1/2 in, Air Inlet Type NPT, Maximum Flow Rate 450 cfm, Maximum Operating Pressure 300 psi, Maximum Operating Temperature 175 Degrees F, Pressure Gauge Included No, Adjustment Mechanism Nonrising, Overall Width 4 1/4 in, Air Inlet Gender Female, Air Outlet Gender Female, Air Outlet Size 1 1/2 in, Air Outlet Type NPT, Body Material Aluminum, Maximum Regulated Pressure 125 psi, Minimum Regulated Pressure 5 psi