Unidirectional storage containers

Make the three storage unit input/output decided by the direction of the conveyr/pipe.
Gives a chance to have input and output on the same side

Unrealistic. The difference is technical and the model must represent it. Fluid storage shall have pump at output. Loose storage must have input from top and output at the bottom. Only the object storage may be bi-directional. Probably. But considering restrictions of other two it is not worth it.