Red Carbonation Cap | PCO 1881 Gas Fitting

If you've got a keg system, you should have at least a couple of these kicking around — they're that useful.

Need to clean your beer line? Want to carbonate a flat beer quickly? Or just want to take a traveller over to a mate's place? Then do yourself a favour and grab one of these — it's one of those essential little tools you'll wonder how you brewed without.

This Red carbonation cap screws onto standard soft drink and Coke bottles (PCO 1881 thread) or home brewing PET bottles, turning any bottle into a proper gas-in point. It's red by convention, marking it as the gas side — handy if you're running it alongside a yellow cap too, which is more commonly used for liquid transfer (liquid gold on yellow, danger gas on red — easy way to remember it).

Liquid and gas ball lock compatible, so it plays nicely with your existing kegging gear.

Made from chemically-resistant engineering plastic, so it can handle knocks and regular use without cracking or falling apart on you.