John Gust push fittings to make serving from Cornelius Keg set ups easier.
These fittings simply screw onto the threads of the quick disconnects. Available as either 5/16" (usually beer line) or 3/8" (usually gas line).
3/8" push fit x 1/4" FFL female adaptor.
5/16" push fit x 1/4" FFL female adaptor
Note. If you want to run a smaller bore pipe straight from the disconnect, then simply select the correct sized reducer, which reduces the outlet size down.