Antwort Customer Service :

On the website [hier auf Galaxus] it looks like Carbonator 2 since copper and brass were never made for Carbonator 1.

It is no difference, just some internal improvements which increases quality. But if you are using your C1 correctly you won’t notice the difference.

Hello - Can't say. Maybe the Serial No 17-007-2828 will help - Greetings

Sorry, I can't make it out. Greetings