Air Oil Separator for Compressors remove compressor lubricant from the compressed air stream. The Air Oil Separator reduces the lubrication oil entrained in the compressed air to 2 3 PPM. The Air Oil Separator is the component that separates the compressor lubrication oil which may be mineral oil or synthetic oil from the compressed air and returns it to the oil sump. The Air Oil Separator for Compressors removes the oil which is in aerosol form from the air, so that the user gets oil free air.