Filter-Regulator Filter Bowl Material Metal with Sight Gauge Air Inlet Size 1/4 in Air Inlet Type NPT Maximum Flow Rate 80 cfm Filter Rating 40 micron Filter Type Particulate Maximum Operating Pressure 250 psi Drain Type Manual Pressure Gauge Included No Body Material Zinc Overall Width 2 in Series Compact Adjustment Location Top Adjustment Mechanism Knob Adjustment Mechanism Material Reinforced Nylon Air Flow Direction Left to Right Air Inlet Gender Female