The centrifugal pump can't pump water

It may be that the user has not installed and used correctly. The correct installation and use method is to install a bottom valve on the suction pipe of the centrifugal pump. Before starting, the entire pump body and the inlet pipe must be filled with water. Before starting, the water outlet valve must be closed. After starting the centrifugal pump, you can slowly open the water outlet valve. Each single-stage centrifugal pump has different self-priming performance depending on the model. You need to know the cavitation margin, You can know the effective self-priming height of this centrifugal pump.

The reason why the single-stage centrifugal pump cannot be pumped is that the self-priming height exceeds the effective self-priming height of the centrifugal pump. The self-priming height of the conventional single-stage centrifugal pump is less than 3 meters. If it exceeds this height, it should be selected from the suction. Centrifugal pump or high suction self-priming pump with vacuum assist.

The reason why the single-stage centrifugal pump in use cannot pump water may also be caused by debris clogging in the pump cavity, impeller, foot valve, pipeline and other places.

If a single-stage centrifugal pump leaks water, it will also cause the centrifugal pump to fail to pump water.

The reason why the newly installed centrifugal pump can't pump water may also be that the motor is not turning properly. If it is not turning, you need to switch off any two power lines after the power is turned off.

Multi-stage centrifugal pumps do not have self-priming ability. Many users take the multi-stage centrifugal pumps in the same way of installation as single-stage centrifugal pumps. The inlet valve is filled with water before starting the pump and the pump cannot be pumped. An inlet can be installed at the pump inlet or a water ring vacuum pump can be installed.

If the multi-stage centrifugal pump needs to be selected during the new procurement and selection phase, we can integrate a vacuum pump to assemble and integrate a full-automatic vacuum auxiliary system according to the actual situation. First start the vacuum pump and start the multi-stage centrifugal pump after the vacuum pump draws water. The effect of self-priming of multi-stage centrifugal pump can be realized.