Regulator Air Inlet Size 1/4 in Air Inlet Type NPT Maximum Flow Rate Not Applicable Maximum Operating Pressure 300 psig Maximum Operating Temperature 125 Degrees F Pressure Gauge Included No Adjustment Mechanism Knob Overall Width 2 1/8 in Series 15 Air Outlet Size 1/4 in Air Outlet Type NPT Body Material Zinc For Fluid Type Compressed Air For Substance Type Air Maximum Flow @ 100 psi 21 scfm Maximum Regulated Pressure 125 psig Minimum Operating Pressure 0 psig