Factorio Forums

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I don't think the presented blueprint shows the issue clearly enough.
First, the bricks overflow logic didn't work properly, so molten iron was stuck on undisposed stone. Then concrete was bottlenecked on not enough output belts. Now it seems refined concrete is bottlenecked on insufficient iron sticks?

After some changes to the setup (extra inserters, belts, priority splitter overflow), the issue boiled down to a duplicate of 118644 Fluid transfer rates are capped even on directly connected entities as well.

Regarding the idea of allowing production modules in the steam condensation recipe, I'm sure it won't happen, as that would create a very positive loop for infinite water.