| 摘要 |
An apparatus and method is provided for deflating an air-pressurized tire used on heavy machinery or mining equipment. The apparatus can include a venturi tube having a feed tube with one end terminated in the constricted throat of the venturi tube and the other end operatively connected to an exit port of a valve extraction tool connected to a valve stem disposed on the tire's rim. A stream of air can be passed through the throat of the venturi tube to create a region of pressure lower than atmospheric pressure. When the extraction tool removes the valve core of the valve stem, pressurized air in the tire can flow to the low-pressure region in the venturi tube thereby resulting in decreased time to deflate the tire.
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