Originally Posted by Richardwhittaker
I'm not sure what the proper name is but they are the part that is connected directly to the keg, they are not an adapter. The o-ring part of that adaptor looks like it replaces the diptube and diptube o-ring.
If someone is handy at brazing they could add a corny post to anything.
It's possible we're both
wrong. They at least appear to need a gasket on top, like the part I illustrated, but from your pic they don't seem to have internal threads...
Looks like your big score is paying off for you.