Filter-Regulator, Filter Bowl Material Plastic, Air Inlet Size 1/2 in, Air Inlet Type NPT, Maximum Flow Rate 200 cfm, Filter Rating 5 micron, Filter Type Particulate, Maximum Operating Pressure 150 psi, Drain Type Manual, Pressure Gauge Included No, Body Material Aluminum, Overall Width 2 7/8 in, Series B28, Adjustment Mechanism Knob, Adjustment Mechanism Material Acetal, Air Outlet Size 1/2 in, Air Outlet Type NPT, Differential Pressure Indicator Included Yes, Drain Included Yes WARNING: This product can expose you to chemicals including Dichloromethane (Methylene chloride), which is known to the State of California to cause cancer, and Bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. - Bisphenol A (BPA)