... 4. Easy to operate Features and technical dataSuitable for using with direct heating asphalt tank container, asphalt container, asphalt storage ... in the pumps, valves and pipeline.It is a hot oil heating device and the heating source can be electricity, ... oil, 18KW X N (groups);Heated asphalt pump, 25m3/h x N, electricity drive;Generators (optional);Intelligent control. Small Thermal Hot Oil Heater