... pump2) High head, large capacity, high efficiency.3) Good NPSH performance.4) Widely application: They are designed for handling more abrasive ... the impeller. Meanwhile, it can still maintain a reliable sealing performance.3. The parts such as labyrinth, labyrinth locknut, end cover ... 5. All of the rubber parts have superior erosion resisting performance which can be used for a long life. Shijiazhuang ...