The design and lectotype of circulating pump, automatic return water switch valve, expansion tank and atmospheric connection pipe in atmospheric hot water heating boiler room are discussed.
对常压热水供热锅炉房的循环泵、回水自动启闭阀、膨胀水箱、大气连通管的设计选型进行了探讨。
In the hot water system a high water tank with solenoid valve controlled water feeder is used to replace the secondary circulating pump.
热水系统中，采用电磁阀根据水箱液位进行补水，省去二次循环泵。
And a by-pass pipe with check valve is set between the inlet and outlet of circulating pump.
在循环泵进出口之间设置带止回阀的旁通管。
The circulating pump is communicated with the two anode chambers respectively through two pipelines each of which is provided with a valve.
循环泵通过各设有阀门的两管道与电解槽的 两个阳极室连接。
The lower end of the vacuum filter is communicated with a circulating pump through a pipeline which is provided with a tapping valve.
真空过滤器的下端通过设有排液阀的管道与一循环泵连接。
The lower end of the vacuum filter is communicated with a circulating pump through a pipeline which is provided with a tapping valve.
真空过滤器的下端通过设有排液阀的管道与一循环泵连接。
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