�����It is provided with siphon function, supports connected oil tanks and avoids the safety hidden troubles resulted from direct connection of oil tanks with steel pipes. �����It has 3 gallon/hour line leak detection function (the mechanical type leakage detector can be matched). �����It has 0.1-0.2 gallon/hour line leak detection function (the electronic type leakage detector can be matched). �����One oil submerged machine can be equipped with many filling guns. The model of the oil submerged pump can be decided according to the length, diameter and elbow of the oil lines. �����It can be used for gasoline, diesel oil, kerosene, as well as 80% gasoline and 20% methanol, ethanol TAME, ETBE and MTBE. �����It has overheat protection function. �����The set value of the pressure of the oil lines can be adjusted manually. �����It can prevent oil gasification so as to avoid the phenomenon that the oil cannot be pumped out due to gasification. �����The oil delivery distance is much larger than that of self-priming oil pump.