According to the different use and use environment, Oil tank truck has many functions of refueling or transporting oil. It has the functions of oil absorption, pump oil, many kinds of oil sub-loading, separate discharge and so on. The special part of oil truck consists of tank body, power collector, drive shaft, gear oil pump, pipe network system and so on. The pipe network system consists of oil pump, three-way four-position ball valve, two-way ball valve, filter net and pipeline.