The bulk container can fix the extension tube well while not affecting the normal work of the liquid tappingvalve.
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。
2
The lower end of the vacuum filter is communicated with a circulating pump through a pipeline which is provided with a tappingvalve.
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。
3
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.