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，内度超过该件所排水度时，杆的位移使A口关。

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.

有一定开度，开始工作时，冷凝水与空气从A口迅速排放。随着度升高，件(芯)内的杆，向A口移动。