| 摘要 |
<p>Combined ''roll-over'' and float valve for the vent pipe from a vehicle fuel tank. The valve has a valve closing member (8) with a float (11) which, when liquid penetrates into the valve housing (1), lifts the valve closing member towards the valve seat (13). Normally, the valve housing is empty of liquid, and is vertically positioned, with the valve closing member resting on a ball (15) in a conical depression (16) in a slideable plunger (17). If the valve is tilted, the ball moves laterally and pushes the valve closing member to its closed position. If the valve is turned upside down and liquid flows in through the inlet, the valve is kept closed by virtue of the fact that the total weight of the ball, the plunger and the valve closing member is greater than the lifting force of the float.</p> |
