The main function of a booster set, be it fire or domestic, is water pressure boosting.
You get two different types of booster sets Fire and Domestic.
A Booster set will provide a low flow at a high pressure.
The booster is known as a “Centrifugal pump” meaning that the pumps “impeller” spins in a circular motion like the propeller of a boat. But instead of the propeller being outside, it is covered with a protective cover.