The G‑type single screw pump is an internal‑meshing rotary positive‑displacement pump. Its main working components consist of an eccentric screw rotor and a fixed rubber‑lined stator. As the screw rotates inside the stator, the two mesh to form a series of sealed cavities, which continuously push the medium from the suction end to the discharge end.

As environmental protection requirements keep tightening, projects including water resource recycling, solid‑waste disposal and waste‑gas treatment are growing more reliant on equipment stability. Within the entire fluid‑transport chain, centrifugal pumps stand out as the most widely used pump type in environmental‑protection projects, thanks to their simple structure, stable flow rate and convenient maintenance.

Teffiko screw pumps are widely used in chemical industry, sewage treatment, food slurry and other working conditions thanks to their stable conveying performance. However, even premium equipment requires standardized operation and maintenance. Proper maintenance of screw pumps directly determines service life, conveying efficiency and failure rate. Starting from the three core operational links of start‑up, operation and shutdown, this article provides clear maintenance cycles and definite answers to what oil should be filled into Teffiko screw pumps, helping users maintain the equipment and reduce unplanned downtime.