In other words: self-priming pump is booster pump, but booster pump is not necessarily self-priming pump.
Before distinguishing between self-priming pump and booster pump, repeat the definition of self-priming pump and booster pump.
1 self-priming pump
The self-priming pump can start running without further irrigation after the first irrigation. Whether the self-priming pump can self-priming depends on whether the impeller can be immersed in the water after the shutdown. The self-priming pump can ensure that the impeller can be immersed in the water after each shutdown because of the common pump chamber structure.
2 booster pump
It is a general term for pumps that stop supplying rated pressure to pipeline liquids. It does not refer to a particular type of pump. Booster pumps can be pipeline pumps, centrifugal pumps, sewage pumps, self-priming pumps, multi-stage pumps and other types of pumps. Assuming that the non-self-priming booster pump reaches the self-priming effect (the pump sits above the pool), the bottom valve can be installed at the suction port of the pump.
When is it better to choose self-priming booster pump?
In the following cases, the booster pump with self-priming structure is selected as far as possible to improve its usability or safety.
1. The pump is located above the water tank (equipment for loading liquid).
2. The extracted liquid is poisonous or odorous.
3. Higher temperature (high temperature will affect the self-priming height).
Where is the difference between booster pump and self-priming pump in detail?
Top two pumps can be pressurized, one is that the water level in the center of the pipeline is higher than the pump body (booster pump) and the other is that the water level in the center of the pipeline is lower than the pump body (self-priming pump). It is better not to install the self-priming pump directly in the water pipeline, or it may suck the glass of the water meter.
Secondly, if there is no water cut-off, the booster pump can be made. If there is no water cut-off, a container (pool, tank, etc.) will be prepared. If there is a drainage pipe on the container, the booster pump can also be installed. If there is no drainage pipe, the booster pump can only be installed with a self-priming pump.