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.

温升高，阀内温超过该阀感温元件所排温时，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.

阀门有一定开，开始工作时，与空气从A口迅速排放。随着温升高，感温元件(阀芯)内的杆，向A口移动。