Self-priming pumps include booster pumps, but booster pumps are not necessarily self-priming pumps. In other words, self-priming pumps are booster pumps, but booster pumps are not necessarily self-priming pumps.
1. Self-priming pump
It means that after the first filling with water, it can be started and operated without refilling with water for future use. Whether the self-priming pump is self-priming depends on whether the impeller is immersed in water after shutdown. The self-priming pump has a unique pump cavity structure that ensures that the impeller can be immersed in water after each shutdown to ensure its self-priming function.
2. Booster pump
It is a general term for pumps that can provide additional pressure to the liquid in the pipeline, and does not refer to a certain type of pump. Booster pumps can be pipeline, centrifugal, sewage, self-priming, multi-stage, and other types of pumps. If you want a non-self-priming booster pump to achieve a self-priming effect (the pump is located above the pool), you can install a bottom valve at the suction port of the pump.
When is it better to choose a self-priming booster pump?
In the following situations, try to choose a self-priming booster pump to improve usability or safety:
1. The pump is located above the pool (equipment for liquid);
2. The pumped liquid is toxic or has an odor;
3. The temperature is high (too high temperature will affect the self-priming height).
Differences between booster pumps and self-priming pumps
First, both pumps can boost pressure. One is that the water level in the middle of the pipe is higher than the pump body (booster pump), and the other is that the water level in the middle of the pipe is lower than the pump body (self-priming pump). It is best not to install a self-priming pump directly on the tap water line, which may break the glass of the water meter.
Second, if the water does not stop flowing, you can use a booster pump. If it often stops flowing, you need to prepare a container (pool, water tank, etc.). If a drain pipe can be installed on the container, you can use a booster pump. If a drain pipe cannot be installed, you can only install a self-priming pump.
The booster pump is a self-priming pump with a constant pressure device installed, which means that it can keep the water pressure in the water pipe at a relatively average value. Due to its simple structure, it is not very easy to control and the water pump may be easily burned out.
