Abstract: A fueling device is equipped with a grating member provided in a fuel path of a fueling pipe, wherein the grating member is equipped with a plurality of ring shaped partition members arranged in concentric circles with the center line of the fuel path as the center, and having differing diameters, and support members for supporting the partition members in relation to the inner wall of the fueling pipe, and wherein the gaps formed between the inner wall of the fueling pipe, the partition members, and the support members are used as a plurality of gap flow paths which are a portion of the fuel path, and the center of each of the partition members is arranged at different positions on the center line.