... this unit can be applied in separating diesel oil,lubricated oil and 380cst/50 celsius degree HFO or higher ... auto control,including auto start,auto increase temperature,auto oil inlet,auto water seal,auto seal,auto sludge discharge ... ,auto stop the machine,auto cleaning,auto unloading oil from sludge tank,auto check and auto alarm, ... with auto history record copy.etc Heavy Fuel Oil purification