Passive end cap grilles for conveyors

I am not sure if this is the right idea but I would like to start a topic to discuss how fluids terminate from conveyors into volumetric spaces.

In SE1 we have a vent to terminate a conveyor to bring oxygen to an airtight space or to pull oxygen from the atmosphere. Air vents in SE1 can be quite energy hungry when they are used in number.

If volumetric spaces are used to hold fluids other than oxygen, and conveyors are used to transport those fluids eliminating the need for physics to operate when transporting fluids in a conveyor, then the conveyor termination and fluid sorting needs to be addressed, let alone issues of pressurization.

I will assume that storage tank blocks handle their own pressure needs.

Will there be a continuation of the air vent theme to supply or remove all fluid types?

This would be the quick fix, with fluid selection as an option on the vent.

In this case the vent would become a sorter of gases and liquids.

Another option would be to have a passive end cap conveyor grille allowing what ever fluid in the conveyor behind the grille to enter/exit via the grille. The contents of the conveyor network would need to be controlled by a sorting/filtering/pump mechanism along the pipework somewhere before in the system.

Question : Could the grilles be opened/closed?

Question : Should fluids be transported in dedicated conveyor networks?

Question : Should conveyor endpoints have a dedicated active tap/pump/grille/vent for each type of fluid?

Question : How would a vacuum be treated?

May be all of this has been resolved already, please share your thoughts.