Hey ScoobieZ, my mistake on the stoppage of flow as I was thinking more of the lines of a standard thermostat. But I still would not want to rely on a spring to regulate the flow to the cooler. I prefer the cooler to do the regulating. Also you should really install a temp sensor so you know what type of temps you are generating. This will give you an idea of what size cooler you need as well as if the cooler you installed in doing a good enough job.
$.02
