Type SP pumps are vertical, centrifugal slurry pumps submerged in sump to work. They are designed for delivering abrasive, large particle and high density slurries. These pumps have no need of any shaft seal and sealing water. They can also be operated normally for insufficient suction duties.
Wet parts of type SP pump are made of abrasion-resistant metal.
All parts of type SPR pump immersed in liquid are lined with rubber outer liner. They are suited to transport non-edge angle abrasive slurry.
The type with “L” is a sump pump of extension shaft series, which is suited for the working condition of deeper level. The guide bearing construction is added to the pump on the basis of the standard pump, so the pump is with both more steady operation and wider application range, but flushing water should be attached to the guide bearing.