The tower looking things looks like the half of something like relief or counterbalance valve, the spring supposed to push the spool. Doesn’t look like it is cartridge, so spool is riding inside of the blocks body or there’s could be another sleeve pressed in to the body.
The Allen plugs probably diagnostic test ports, or technological opening if it has some components behind it.
Without exploded view or illustration some kind, or having it in my hands to do a “reverse engineering” it’s hard to say.
See if there’s a spool behind that large hex plug, if there’s a spool with smaller diameters at the ends and larger in the middle - that’s your flow divider.
Take everything apart, carefully photograph and document as you go, to correctly assemble it back together. Post more pictures - and we will try to figure it out together.