So while I was looking for other found parts I stumbled across this photo.
View attachment 108605
I know the hose connecter in the photo isn't the right one due to not being brass, red, or the wrench flats being the correct size but its close and designed the same way as the part that was used from what I can tell. That was a hose connecter from Martin Baker for airplanes. I believe it was used on some ejection seats.