Please, little help about Life Support 3 (Spacebuild)

Greetings. I require little advice about LS3 Resource Valves.
I wan to use closed system - Tokomak Reactor + Tanks + Energy Cell + some Expression 2 - that will only export 500 energy per tick. I made it already, but i do not want use Resource Pump to export energy, it is too complicated for that simple problem. I see that Resource Valves are the best solution of this problem, but i cannot connect them to anything. Please, give me advice how to use resource valves!

I haven’t play LS3 in a while so I can’t really give much help but this might help: