Submersible pumps and sewage pumps have been paid more and more attention by people. They are used more and more widely, from the original pure water to various domestic sewage, industrial wastewater, construction site drainage, etc. It plays a very important role in municipal engineering, industry, hospital, construction, hotel, water conservancy and other industries. In Europe and the United States, there are also many applications of drainage and sewage in ordinary family basements.

　　This kind of motor is single-phase AC motor, which needs to be equipped with capacitor, and the motor can be switched on and off through the liquid level switch.