SMC AFF37B-N14D-T Compressed Mainline Air Filter, Removes Oil, Water, Particles, Float Auto Drain (N.O.), 3 Micron, 212 scfm,, 1-1/2" NPT Mainline filter, pre-filter No screw threads or tie rods are required Removal and replacement of the element is made quick and easy Series AFF improves the function of downward dryers, extends the life of precision filters and prevents trouble with equipment Compressed air fluid