Hsieh Yu butterfly valve is designed for pipeline system connection between two flanges or with one flange for connection with the pipeline system of which one side has been fixed.
协羽蝶阀是设计用于管路系统连接，两个法兰间的连接或一个法兰间的连接或一个法兰间的连接用于一边已经固定的管路系统。
This is an introduction of features of fuel fluid heater, calculation of heating quantity, and method of pipeline connection for buses and coaches.
介绍客车燃油液体加热器的特点、供暖量的计算及管路的连接方法。
It was widely used in construction machinery, because of its compact structure and simple pipeline connection.
由于其具有结构紧凑、管路连接简单等优点，在工程机械中得到了广泛应用。
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