Where does this go - vacuum valve

[boxfix]

Here is my setup. Brass barbed fitting into the manifold is hidden behind the hose

[bcinphx]

Thanks for the pictures and the diagrams and the advice guys. Mine doesn't look like any of these. I do not have an orifice on the collar. Now I can't even find the line which broke going to the Tiptronic transmission. I'll have to put it on the lift to see if I can find where it comes out of the transmission. If anybody knows where this comes out of the transmission please let me know. I will probably now have to pull the alternator so that I can see more. I have looked at so many diagrams I'm going stir-crazy. I do have about 10 feet of new plastic tube. Thanks guys

[bcinphx]

Found all the hoses at replaced them all. Found the worst one underneath the vacuum canister hard to get to but got it all done thanks guys for everything.