Thanks for the help , quick reply and yes i meant soda "stream" i forgot to check over, however how can i tell which is which thread

I have been looking around, and have made a qev with slide valve however the air tank i am using now is very small and i was wondering as i have seen people use the carbonator from a soda stream, what threads are they when you take the valve off and how do i fill it up also on a pressure regulator i...

i have made a prototype of this but a bit different, i just wanted to know how you filled up the carbonator, did you make a hole and put the schrader valve in ? and fill it up from there?