Does the multistage pump need to exhaust air? The answer is yes. In the process of daily use of the pump, it is inevitable that some air will seep into the pump chamber. If the air is not discharged in time, it may cause pressure fluctuation to increase after long-term accumulation, affect the flow and fail to meet the standard, and may also be accompanied by abnormal pulsation. It needs to be solved by air discharge. See the following for details.

It is undoubtedly necessary to exhaust the air from the multistage pump. Correct exhaust is beneficial to the long-term use of the multistage pump, and can significantly improve the operating stability of the pump. The operation mode of exhaust is not complicated. It is only necessary to open the exhaust valve or exhaust through the exhaust hole before each startup. For some pump types without exhaust valve, the exhaust can be completed by air pressure gauge, or by means of water inlet at low place and water outlet at high place. In addition, it is also feasible to discharge the gas by circulating water. It is necessary to first absorb water in the pool, then transport the water for a circle and return it to the pool. Repeat the operation to complete the exhaust.

After understanding the question of whether the multistage pump should discharge air, in order to improve everyone's understanding of the pump, the following will further explain several reasons that will lead to gas entering the pump chamber.

1. There are small cracks in the pipeline that cause air infiltration: after a long time of transportation, the rubber pipeline of the multi-stage pump may gradually appear small cracks due to aging. After these cracks expand, the air will seep into the pump chamber, so it is necessary to replace the new pipeline in time to solve this problem.

2. Wear and failure of packing: packing seal is a kind of consumable material, which will inevitably be worn after a long time of use. After excessive wear, liquid leakage will occur due to poor sealing, and air will also enter the pump chamber, which needs to be replaced. Generally, it is recommended to check once every six months.

3. The installation does not conform to the corresponding standards: it is recommended to check whether the water inlet at the water source is too shallow, which leads to vortex air intake. The installation and pipeline positions need to be adjusted.

4. Shaft sleeve wear: The shaft sleeve is also one of the vulnerable components of the multi-stage pump. After a long time of use, it will gradually wear out due to frequent work. It is necessary to regularly check and replace the shaft sleeve with severe wear. In addition, note that the O-ring gasket is also one of the vulnerable components.

The above content introduces whether the multistage pump needs to exhaust air. It can be seen that it is necessary. The customer is recommended to exhaust before starting up. At present, most models and specifications of multistage pumps have exhaust valves, which are simple and convenient to exhaust without too much effort of pump users.