Make a really small and useful keg system out of PET plastic bottles.  Great for taking beer to a party or making your own micro/portable/mini keg system.

PET bottles are redily available and inexpensive.  The standard thread for PET bottles for carbonated beverages between 0-3L in size is the .  This thread type suits our carbonation caps that you can buy in plastic or stainless as a product option, top right of screen. Please note that this is just the T – piece so if you haven’t got any carbonation caps please add your choice

Historically you would only be able to place a black or grey ball lock disconnect onto thse fittings one at a time.  This tee piece now enables you to attach both a liquid and gas disconnect to the bottle at the same time so you can essentially use a common PET bottle as a keg.