Gas Corny Ball Lock Disconnect - MFL
This grey ball lock disconnect with flare threading is a great disconnect to use if you have ball lock homebrew kegs. The threaded connecter allows you to attach a 1/4" or 5/16" swivel nut and barb to the disconnect.
If you use 5/16" or 3/16" inner diameter gas line, this is the gas disconnect that you want to use along with a 5/16" swivel nut and barb. Use a 1/4" swivel nut and barb with 3/16" and 1/4" ID gas lines.
With ball lock corny kegs, the gray disconnects are for gas and the black disconnects are for liquid. Gray for gas, black for beer.