When the water level of condensate in the drain sump goes up, the cup flows up until it shuts the admissionpipe again, the following cycle starts.
当集水仓中的凝结水位升高时，小桶浮起直至再次封闭了进汽管，下一个循环周期开始。
2
When the water level of condensate in the drain sump drops, the cup to shut the admissionpipe falls down, the passage for steam to enter into the valve body is opened.