Stainless Steel Carbonation Ball Lock Cap With Gas Barb

I use this with the carbonation stone. set the regulator to 35 psi. Get the water really cold. Works great. Makes soda water in about an hour.

Cap works great, fits the bottles easily and carbs up a big bottle of soda water in no time. I love it.

I use this when I want to bring some beer with me and want to ensure that it's well carbonated; fill from your keg, squeeze sides of container to get foam/air out, put cap on, pressurize. Also use it at kegging time; to ensure I have a full keg I often brew a little more than a keg worth; any extra I can transfer into a PET bottle and pressurize. Just squeeze the air out, put cap on, pressurize. I also use it to clean my beer lines; if you have MFL connections, you can connect an MFL gas disconnect to your beer line, connect to this cap, and push cleaning liquids through it. I do so with an aquarium pump, which I drop into a container of cleaner, and I place it under the open tap, circulating it through the line and tap for as long as I'd like. For a quick clean, one could fill a 2L bottle with cleaning solution and just squeeze it through.