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.

温度继续升高，阀内温度超过该阀感温元件所水温度时，杆的位移A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.

阀门有一定开度，开始工作时，冷凝水与空气从A迅速放。随着温度升高，感温元件(阀芯)内的杆，向A移动。