止回阀与蝶阀的连接是经常发生的事，通常需要在这两种阀门之间加上一节短短的阀槽。

Check valve and butterfly valve combinations are very popular; normally a short spool piece is required between the valves.

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介绍了涂装线设计中常用的各种类型的阀门(包括球阀、蝶阀、截止阀、闸阀)及其特点。

Different types of valves (including ball valve, butterfly valve, cut-off valve and brake valve) commonly used in designing painting line and their features were introduced.

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进口蝶阀是指通过阀轴旋转来带动一个圆盘形的蝶板的转动，达到开启与关闭的一种阀门，在管道上主要起切断和节流用。

Butterfly valve through the valve shaft rotation to drive the rotation of a disc-shaped disc, to open and close a valve, cut off from the main pipe and throttle with.

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