And the situation in the long-term stable operation, use the type of impeller shaft to the edge of the smaller, and can be set up before and after the Vice-leaf cover.
且在长期运行中情况比较稳定，采用该型式叶轮的泵轴向力较小，且可以在前后盖板上设置副叶片。
Rewind shaft is air inflated trapper leaf style so there is no core to wind on.
绕组轴是一个膨胀的叶轮形状，没有核心。
Rewind shaft is air inflated trapper leaf style so there is no core to wind on.
绕组轴是一个膨胀的叶轮形状，没有核心。
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