FIG. 1. is a front view of a constant flowing aerator showing my new design thereof; FIG. 2. is a rear side view thereof; FIG. 3. is a left side view thereof; FIG. 4. is a right side view thereof; FIG. 5. is a top plan view thereof, FIG. 6. is a bottom plan view thereof; FIG. 7. is a front-top perspective view thereof; and, FIG. 8. is a front-bottom perspective view thereof.