~NVM(R) Submersible(Vertical) pumps are centrifugal, vertical slurry pumps submerged in sump during operation. They are designed for delivering highly abrasive, large particles and high density slurries. The sump pumps are suited for handling abrasive or corrosive, dense slurry with large particle size. NVM Series vertical pump is metal lined slurry pump, NVR series pump is rubber lined pump, They are mainly used to transport the slurry in pool. Because of the NVR pump are with rubber lined parts, it is suitable for handing strong corrosive slurry better than NVM pump.