Patent ID: 8770218
Filing Date: 2014-07-08
Classification: F16K,Y10T

Abstract:
1. A fill-up control valve device comprising: a casing attached to a fuel tank and having a ventilation passage communicating between an inside and an outside of the fuel tank, the casing including an inner wall and an outer wall both extending downward from the casing and a gap arranged between the inner and outer walls; a float valve unit movably accommodated in a float guiding portion including the inner wall extending downward from the casing, the float valve unit being movable in a vertical direction in accordance with fuel liquid level in the casing and being brought into contact with an open end of the ventilation passage to operatively open and/or close the ventilation passage; wherein, when the fuel liquid level in the fuel tank is raised to reach a first predetermined level, the fuel liquid level in the casing is raised to a second predetermined level which is higher than the first predetermined level, so that the float valve unit is moved up to close the ventilation passage; wherein the casing has a ventilating aperture formed at a position higher than the second predetermined level, the ventilating aperture communicating between the inside of the fuel tank and the float guiding portion; wherein the casing has a vessel portion with a closed end bottom, in which the float valve unit is arranged; wherein the vessel portion further comprises: