介绍特殊情况下连通器原理在无底阀排水系统中的应用。
This paper introduces application of no bottom valve pumping system using communicating principle in special situation.
同心双向阀结构克服了传统的单向阀并联结构两阀间易连通的缺点。
The construction of concentric bi-directional valve overcomes the disadvantage of easy to connect between two parallel check valves.
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。
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.
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