self-priming peripheral pump it has the advantages of compact structure, easy operation, smooth operation, easy maintenance, high efficiency, long life, and strong self-priming ability. The pipeline does not need to install the bottom valve, before the work only to ensure that the pump body storage of quantitative primer can be.

Self-reiming peripheral pump works by filling the pump case with water before starting the pump (or there is water in the pump case itself). After starting, the impeller rotates at high speed to make the water flow in the impeller channel toward the vortex shell. At this time, a vacuum is formed at the inlet, which makes the inlet reverse check door open and the air inside the suction pipe enters the pump and reaches the outer edge through the impeller channel.