The Campbell Hausfeld filter, regulator and lubricator system (PA211400AV) combines a heavy-duty filter, regulator and lubricator into one space-saving unit. The system removes dirt and condensed water from compressed air lines while adding an adjustable amount of lubrication, helping to extend air tool life, minimize downtime and increase productivity. The built-in regulator is easy to adjust and helps ensures that air tools receive the correct air pressure for proper operation. 1/2-inch NPT inlet/outlet port.