SP and SPR pumps are vertical,centrifugal slurry pumps which are to handle abrasive,large particle and high concentration slurries.This model pumps do not need to be installed with any shaft seal or sealing water.Even they can run normally in the status of insufficient suction.The pump bodies of SP model are made of wearable metal and impellers are made of wearable metal or rubber polyurehtane.All submerged parts of SPR model pumps have rubber liners.This model of pump is used to handle corrosive slurry.