| 摘要 |
<p>A sanitation appliance such as a water-closet or the like equipped with a generally vertically extending outlet pipe is provided with a resilient diaphragm mounted within said pipe and extending thereacross to stem the flow of flushing water passing through said pipe until a sufficient quantity of the water has accumulated whereupon the diaphragm operates to pass the water through the pipe thereby to cause the accumulated water to act as a water plug creating a suction effect within the pipe.</p> |
