Rainbarrel Valve connector

The connector between my existing barrel and valve got broken off one winter. Rather than replace the entire barrel I searched Thingiverse but didn't find a suitable replacement. So I designed a part to repair the one I have.

This is designed for the internal part to be threaded into the external part from the inside of the barrel so you must be able to get into the barrel to do this.

There was a 36mm hole in my barrel so there is a 2mm deep 35mm flange that protrudes from the external p