As you can see from this pic the handle on the corny has been cut out and a threaded connector pushed through. This goes to a tap that fits into it.
This is the whole parts.
This is the connector that goes through the rubber handle.
This then goes onto the end of the connector, onto some rubber pipe, then onto the disconnect (with a barbed end)
The Tap then goes into the end of the handle connector. This tap has a flow control lever on it too.
Sorry cant do a pic of the tap on the actual corny as the two with the holes in are currently either under the bar or in the maturing freezer.. and i cant lift anything that heavy for a few more weeks yet (or the wife will shoot me)
Hope this helps fella.
Tally