The end suction pump works by rotating the impeller to make the water centrifugally move. Before starting the centrifugal pump, it is necessary to fill the pump casing and the suction pipe with water, and then start the motor to make the pump shaft drive the impeller and the water to rotate at a high speed. It flows into the pressurized water pipeline of the single-suction pump. According to the material type and the different configurations of the sealing system and cooling system, the single-stage single-suction pump has a wide range of applications. The end suction pump can pump clear water media, and can be used in air conditioning, heating, pressurization, building water supply, fire protection buildings, etc. It can pump chemical media similar to water and other corrosive liquid media, and can be used in chemical, horizontal, pharmaceutical, metallurgy, petroleum and other fields.