| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stable operating liquid cutoff valve device to prevent leakage of fuel by maintaining stable closing characteristics even during a fall down, and perform stable operation through reducing unevenness in a feed oil amount due to an oil feed speed (a change of a full amount due to an automatic stop of an oil feed gun). SOLUTION: A liquid cutoff valve device 1 is a cylindrical member formed such that an upper end part is sealed and a lower end part is opened and the inside forms an air reservoir 3b, and comprises a float 3 having a communication hole 3d to intercommunicate the air reservoir 3b opened to an upper side wall the outside; and a float chamber 2a having an opening window part 2b formed in a position corresponding to the communication hole 3d of the float 3 and communicating gas in a fuel tank 101 (a seal container).</p> |
