Diesel oil advances oil pipe

The utility model discloses a diesel oil advances oil pipe. This diesel oil advances oil pipe includes: the disk seat, it is the tubulose, and fuel inlet has been seted up to one end to check valve chamber has, the check valve, it includes: case, spring holder and spring, the case is sealed with the fuel inlet's of disk seat inner butt, tight case is supported to the one end of spring holder, andthe other end is used for fixing the one end of spring, oil pipe, its one end has the fuel export, and what the other end can be dismantled fixes the other end of disk seat is in order to seal check valve chamber, and with the other end of spring supports tightly, feasible the spring force that the case passes through the spring seals fuel inlet, and the sealed gasket of adjusting, it is laid between disk seat and the oil pipe. This diesel oil advances oil pipe prevents fuel backward flow, makes the fuel pipeline system keep being full of oil -fired state at petroleum pump upper reaches section pipeline, shortens the