This combination air filter and moisture trap removes dirt & debris larger than 40 microns and helps catch condensed water. A must for improving the life of your turbine bearings. For best use, have at least 10 feet of hose between your air compressor and this filter. This will ensure the air has cooled and the water vapor has condensed where it can be collected by the trap. Your air compressor connects to the “IN” port and the Vortex F5 to the “OUT” port. Collected water drains automatically when air pressure is turned off. Remember to order 2 brass hose barbs. The hose barbs are 1/4-18 NPT and push onto 1/8 inch inside diameter hose. *Actual item photo my vary.