SD ,SK,SP Deep Well Submersible Pump The SD, SK, and SP series submersible pumps feature a tightly coupled design where the motor and pump body are connected via a sleeve shaft. A suction filter is installed between the pump and motor to effectively isolate impurities in the liquid. The entire assembly is submerged in the liquid being pumped, which helps prevent pump cavitation (an issue related to the height difference between the pump and the fluid surface). The submersible pump uses the centrifugal force generated by the motor-driven impeller to push fluid from underground to the surface. The application of the SD, SK, and SP series submersible pumps primarily consists of two components: surface components and underground components. The surface components include control cabinets, cables, transformers, etc., while the underground components include pipes, pumps, and other attachments. The surface components are connected to the underground components via delivery pipes that extend to the bottom of the well. The motor section of the submersible pump is typically installed below the hydraulic stage