and through the next downstream equipment it is intended that the heat exchanger of the first stage cooler be the most efficient cooler so that the second stage cooler has a lesser amount of cooling work to do an optional flow meter 6 preferably follows the first stage cooler so that flow rate adjustments can be made at the pump 3 upstream to change or optimize conditions downstream such as at the pelletizer 10 or within the second stage cooler 8 diverter valve 7 can have one or more outlets its primary outlet is to the inlet chamber of the second stage cooler 8 one or more other outlets can be to a drain container and or serve as a dispenser connection into another process and or into a recirculation loop line back to the upstream process origins the diverter valve 7 is synchronized with the downstream process equipment so that it can send liquid wax into it when ready to start up and run or stop flow when ready to shut down and or serve as an emergency diverter in the event flow must abruptly stop to the downstream equipment process the second stage cooler 8 is best defined in five parts the first inlet chamber 8 a should be heat jacketed to precisely control the liquid wax temperature so as to prevent the wax from solidifying at this juncture yet not to add any heat energy so as to have to remove it later the inlet chamber allows for visual inspection by operators yet keeps any unwanted dust impurities and ambient air that could cause degradation or contamination problems it is also to contain level control with alarm functions to alert operators of any potential issues and or automatically.