| 摘要 |
A liquid leveling device comprising a length of flexible transparent tube and a liquid control assembly at each end of the tube for preventing inadvertent leakage of liquid from the tube end but to maintain atmospheric communication with the liquid in the tube during use of the leveling device. The liquid control assembly includes a closed hollow body elongated along a central axis which is normally vertically oriented and having valve structure operatively associated with an air passage through the body. Contained within the body is a float means responsive to liquid flowing from the tube into the body which operates the valve structure and closes the air passage, preventing liquid leakage from the leveling device. The body also contains a ball member normally supported on a sloped inside surface of the body whereby inadvertent tilting of the body will cause the ball to urge the float member to actuate the valve structure and thereby close off the air passage until the body is returned to its vertical operating position.
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