Self Priming Pumps

The working principles of a self-priming pump is that fill the pump shell with water before starting. The impeller rotates at a high speed to make the water in the impeller channel flow to the vortex in the shell after starting the pump. Then, the inlet forms a vacuum so that  inlet non-return door can be opened. The inner air gets into the suction tube of and impeller  of pumps, reaching the outer edge. A self-priming pump is a self-priming centrifugal pump, and it has compact structure, convenient and stable operation, easy maintenance, high efficiency, long service life and good self-priming capacity. A bottom valve is not required for the pipeline. A certain quantity of liquid stored in the pump can ensure the operation. Self-priming pumps in different materials can be selected for different liquids.