| 摘要 |
A valve mounted in a circular aperture in an approximately horizontal automobile body part, comprising a valve body fitted with means that shall be in-stalled in sealing manner in said aperture, further a valve element that in its closed position cooperates in sealing manner with the said valve body and that in its open position allows water draining from top to bottom, characterized in that the valve element is rotationally symmetrical and designed in a manner that it shall float up at a water pressure underneath it and be adjusted thereby into the closed position and in that the valve element comprises a conical segment resting in sealing manner against the edge facing it of the cross-sectionally circular passage of the valve body.
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