Multistage centrifugal pump because of simple structure, its application architecture repair convenience, the advantages of high power, is the use of a class of rate pump products widely used in agricultural irrigation, but sometimes there will be no water, now we have to solve these conditions.
1. In operation, some people in the multi-stage centrifugal pump before the start of the water is not sufficient irrigation, water overflow from the vent, but the inside of the air is not all outside, resulting in a small amount of air in the multi-stage centrifugal pump.
2. Pump body because of the long time of the application, there will be more loose loss or filler, the formation of a lot of water flowing out of the gap, while the air will enter from the outside into the centrifugal pump body.
