| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently satisfy the liquid level sensing response while having a fitting engagement portion of an upper casing and a lower casing at a sufficiently low position.SOLUTION: A casing K storing a float valve 30 has a dividable configuration with a cup-shaped upper casing 1 and a tub-like lower casing 10. A clearance is formed between both the casings 1, and 10 in the radial direction for fuel circulation. In the lower casing 12 formed are a fitting window 12 and a liquid level sensing window 11 with their lower end opening edge parts disposed at the same height. An engaging claw part 5 is formed projecting on the outer side surface of the upper casing 1 so as to be fit and engaged with the fitting window 12. A fuel is poured also from the fitting window 12 so that the fitting window 12 serves also as the liquid level sensing window 11. |
