Fuel valve

A fuel valve that enables and blocks communication with an inside of a fuel tank, the fuel valve comprising:

• a cylindrical first step casing forming an internal region that communicates with a first connection hole connected externally to the fuel tank, the first casing having ventilation windows formed in a wall that forms the internal region;
• a float valve being incorporated into the first casing such that the float valve moves within the internal region of the first casing, the float valve opening/closing the first connection hole through the float moving by floating/sinking in the internal region according to a fuel liquid level in the internal region;
• a second casing including a wall surrounding a periphery of the first casing;
• a first ventilation passage surrounded by a part of an external wall of the first casing and a part of an internal wall of the second casing;
• and
• a second ventilation passage surrounded by another part of the external wall of the first casing and another part of the internal wall of the second casing, the second ventilation passage being provided separately from the first ventilation passage, wherein
• the first and second ventilation passages guide fuel vapor in the fuel tank to the ventilation windows in the wall of the first casing, the second ventilation passage has a larger passage cross-sectional area than that of the first ventilation passage.