The difference between self-priming centrifugal pumps and gear pumps

The body and impeller of the self-priming centrifugal pump are made of refined materials, and the seal is made of hard alloy mechanical seal, which is durable and simplifies the pipeline system while reducing labor intensity. Self suction centrifugal pumps and centrifugal oil pumps are used to transport low viscosity media that require self-priming, flammability, and explosiveness, such as diesel, gasoline, kerosene, clean water, toluene, etc. They have the characteristics of high flow rate, low noise, and long service life. Used for oil depot refilling, loading, etc. Its disadvantage is that there is a problem of uncleanliness when unloading tank trucks with self-priming centrifugal pumps and centrifugal oil pumps. Once the liquid level is too shallow, it will cause the self-priming centrifugal pump to suck in, and the pump will not be able to suck in the material. Gear pumps will not produce similar situations.