A , et vidunder av hydraulisk prosjektering, skiller seg fra konvensjonelle sentrifugalpumper med sin kapasitet til å evakuere luft fra sugelinjen, og sette i gang væskeoverføring uten ekstern grunning. This feat is achieved through an ingenious design, typically incorporating an internal reservoir or chamber. Upon startup, the pump impeller imparts kinetic energy to the liquid within this chamber, creating a mixture of air and liquid. This aerated mixture is then discharged, allowing denser liquid to displace the air within the suction line. As the process continues, the air is progressively expelled, culminating in a fully primed pump capable of efficient fluid conveyance. This intrinsic ability to self-prime renders these pumps invaluable in applications where a consistent fluid source is not guaranteed.