当冷水充满系统时，阀门将自动关闭。
As cooler supply water refills the system, the valve automatically closes.
关闭阀门两次，使得密封环能够自动校准中心。
Valve is closed twice so that the seal ring can self-center.
阀门也可能是自动的，在推动的变化由压力，温度或流量。
Valves may also be automatic, driven by changes in pressure, temperature, or flow.
此外还能在预热空气压力变化时自动修正空气阀门位置。
Besides, it can also correct the air valve position during air pressure change.
自动模式下，正常状态显示当前阀门开度，显示范围不受0.0。
Manual mode, display the corresponding valve opening, the display range is not limited from 0.00 to100.0.
自动模式下，正常状态显示当前阀门开度，显示范围不受0.0。
Manual mode, display the corresponding valve opening, the display range is not limited from 0.00 to100.0.
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