| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional relief valve used for a fuel pipe of a fuel injector, manufactured by cutting a solid material, producing many wastes, and having no choice but discarding the all of them as the wastes, and if the set pressure is deviated in a reinspection after setting an adjuster in a prescribed position. SOLUTION: A valve body 3 is manufacture of a pipe material by plastic working, a nozzle 2 with a valve seat is calked to the tip inside, a ball valve 13, a valve holder 14, and a coil sprig 15 are inserted in the valve body 3, and the adjuster 16 is calked in a position of a prescribed set pressure of the coil spring. When inspecting a relief pressure afterward, the length can be finely adjusted by pressurizing and contracting a cylinder part 26 in the circumference of the coil spring 15. In fitted to the external machine, a gasket seal 25 is applied to one end face of a flange 7 in the tip of the valve body 3, while the end of a body holder 6 is applied to the other end, and the valve body is pressurized while rotated, thereby fitted thereto.
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