General Purpose Air Regulator, Pipe Size - Regulators 1/2 in, Max. Flow - Regulators 220 cfm, Max. Inlet Pressure - Regulators 300 psi, Max. Temp. - Regulators 175 Degrees F, Adjustment Range - Regulators 5 to 150 psi, Nonrising Adjustment Knob, 1/4 in NPT Gauge Port, Balanced Valve Design, Overall Height - Regulators 6.67 in, Overall Width - Regulators 3.15 in