Filter/Regulator, Filter Bowl Material Plastic, Air Inlet Size 1/2 in, Air Inlet Type NPT, Maximum Flow Rate 164 scfm, Filter Rating 5 micron, Filter Type Particulate, Maximum Operating Pressure 150 psig, Drain Type Manual, Pressure Gauge Included Yes, Body Material Aluminum, Overall Width 3 11/16 in, Series 18, Adjustment Mechanism Knob, Adjustment Mechanism Material Acetal, Air Outlet Size 1/2 in, Air Outlet Type NPT, Drain Included Yes, Drain Part Compatibility GRP-96-634