Factorio Forums

If the utility constant "max_fluid_flow" is increased beyond its normal value, fluids distribution does not work properly, causing some machines in the same network to consume more (or all) fluid than others.
Here is a simple mod that changes said value to 1000 instead of the default 100: Save file with the setup demonstrating the bug, one assembler consumes all of the fluid: With a value of 200, in the same setup, both assemblers receive fluid, however one of them receives significantly more than the other.

Thanks for the report however equal flow was never guaranteed and was always a byproduct of the flow algorithm as the values were set. Even in base game the flow is not perfectly even. A perfectly even flow would require two passes over the fluid consumers which was deemed unacceptable as it would slow the simulation performance for something that simply is not needed.