Rising the temperature continuously , when it in the valves runs over the temperature of drainage, the detrusion of top material causes the port A close.

度继续升高，度超过该感元件所排水度时，杆的位移使A口关闭。

Rising the temperature continuously , when it in the valves runs over the temperature of drainage, the detrusion of top material causes the port A close.

门有一定度，作时，冷凝水与空气从A口迅速排放。随着度升高，感元件(芯)的杆，向A口移动。