Filter/Regulator Filter Bowl Material Polycarbonate Air Inlet Size 1/2 in Air Inlet Type NPT Maximum Flow Rate 90 scfm Filter Rating 40 micron Filter Type Particulate Maximum Operating Pressure 125 psig Drain Type Manual Pressure Gauge Included Yes Body Material Zinc Overall Width 3 1/4 in Series Series 07E Drain Included Yes Filter Bowl Guard Included Yes Filter Bowl Guard Material Metal Filter Element Material Plastic