Filter-Regulator Filter Bowl Material Metal Air Inlet Size 1/4 in Air Inlet Type NPT Maximum Flow Rate 73 cfm Filter Rating 5 micron Filter Type Particulate Maximum Operating Pressure 250 psi Drain Type Manual Pressure Gauge Included Yes Body Material Aluminum Overall Width 1 5/8 in Series B08 Adjustment Mechanism Knob Adjustment Mechanism Material Acetal Air Outlet Size 1/4 in Air Outlet Type NPT Differential Pressure Indicator Included Yes Drain Included Yes