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A速排放。着温度，温元件(阀芯)内的顶杆，向A移动。

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，阀内温度超过该阀温元件所排水温度时，顶杆的位移使A关闭。