In earlier versions of Minecraft (e.g., 1.7.10), there was some compatibility between NuclearCraft and Thermal Expansion machines. For instance, Reactor Coolers could be filled using the Fluid Transposer. However, in my current 1.12.2 modpack, this type of integration appears to be missing.

Currently, items and components from NuclearCraft cannot be processed or crafted in Thermal Expansion machines (e.g., Fluid Transposer). This lack of compatibility reduces the integration between the two mods, which was previously a valuable feature.

Thank you for considering this suggestion!

Versions of usind mods:
minecraft @ 1.12.2
nuclearcraft @ 2.19
cothCore @ 4.6.6.1
ThermalExpansion @ 5.5.7.1
ThermalFoundation @ 2.6.7.1
forge @ 14.23.5.2860

@Heklyn Hi there,

Unfortunately I am not updating the pre-overhaul version of NC anymore, but it is probably possible to make a quick CraftTweaker script which achieves the same goal by installing ModTweaker and using the functions described here, e.g.
mods.thermalexpansion.Transposer.addFillRecipe(<nuclearcraft:cooler:1>, <nuclearcraft:cooler:0>, <liquid:water> * 1000, 1000);