Component selection type for fluid-mechanical system

I am creating an enclosure and need to get a water supply through a plastic wall inside to the core device. I imagine this water line will be a flexible tube and will screw on or snap to an adapter on the outside of the enclosure. On the inside of the enclosure there will be another tube feeding the core device.

I am an electrical engineer and don’t know where to get started to speak eloquently on this topic. Could someone point me in the right direction to defining the type of fluid-mechanical components that would be involved for this function or at least help me refine my question because I am shooting in the dark.

I imagine the tube feeding the device would look similar to a line of what that feeds a refrigerator.