用管帽一般在压力较低的情况下，便于拆卸检修，高中压情况下一般不用管帽。

Tube cap in the situation of low pressure, remove maintenance, high pressure situation general don't tube cap.

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如果有必要，在压力和流量下降很多的情况下，则应对泵进行拆卸检修，更换维修已损坏的部件。

If necessary, in many cases fall in pressure and flow, should be made for the pump to remove the maintenance, replacement of repair damaged parts.

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它的最大优点是结构先进合理、密封性能严密可靠、拆卸检修方便、工作稳定、噪声低、使用寿命长。

Its biggest advanced and logical structure, reliable sealing performance, convenient dismantling and repair, stable operation, low noise and long lift.

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