According to the structure of servo mechanism on HD2se-ries pump, their functions have been analyzed. The structure and control process of constant power valve are mainly discussed.
根据HD 2系列泵伺服机构的组成，分析了它们各自在HD 2系列泵中所起的作用，着重讨论了恒功率阀的结构和控制过程。
The box cover is provided with a temperature control system, in the constant temperature box rear drain valve and an external power supply socket.
箱盖上有控温系统，在恒温箱的后部是排水阀及外接电源插座。
In this paper, temperature difference self-power adjusting valve is used to make BF cooling apparatus change constant flux water supply mode to constant difference in temperature cooling mode.
针对高炉恒流量供水冷却方式的弊端，提出采用温差自力式调节阀使高炉按恒温差供水冷却方式冷却。
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