The upgraded blue CO2 adapter for soda bubbler is an adapter that can connect the soda machine with the blue Co2 cylinder. You can also use this adapter to connect the old soda hose with TR21-4 male thread to the new soda machine. With this blue soda machine valve refill accessory, you can decide for yourself which CO2 cylinders to use with your soda machine. The upgraded CO2 adapter, suitable for most universal cylinders, is specially designed for 60L CO2 cylinders with TR21-4 male valve that connects the soda machine. with the adapter, the bottle will be long to insert, so it is necessary to remove the base where the 60L CO2 bottle is in the terra/art/duo soda maker, then insert the bottles The blue level CO2 adapter for soda water makers, constructed from quality metal materials for durability, designed for reliable performance that ensures smoother and more operation, so the blue soda maker valve refill accessories for connection a longer life. and operation. The soda maker valve