Are Kayfun and Kraken have an always-open fill port like the Genesis ?

[VapinSweetZ]

I really concern about spilling liquid from the filling hole on my AGA-T2 and its not always possible to keep the device standing.
I understand that covering the filling port will cause a vacuum and performance issues.

Whats the situation with other RBAs ?

 

[heateris]

Kayfuns have a fill port on the side or bottom that is plugged with a screw.


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[Dj Xy]

I understand that covering the filling port will cause a vacuum and performance issues.

Unlike genesis style devices, vacuum is crucial for a kayfun style device to work properly