The bulk container can fix the extension tube well while not affecting the normal work of the liquid tapping valve.

本发明既能良好的固定延伸管，同时也不妨碍放液阀的正常工作。

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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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After the ball valve seat wear and tear, can be a ball into the seat, and with the rod lightly tapping ball several times, until the valve with the valve seat up close together.

球形阀阀座磨损后，可用一钢球放到阀座上，用金属棒轻轻敲击钢球数次，直到球阀与阀座密合为止。

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