(Singlephase/Threephase) DARLING pumps have also developed little Jumbo pumps with smaller H.P. rating in the range of 0.75,1.0,1 !& & 2 H.P. While the constructional features and design of the little pump is similar to the Jumbo pumps. The little Jumbo pumps are powered with single phase as well as threephase electric supply. The little Jumbo pump is fitted with a sealed, leak-proof single phase or threephase motor. It also has a water jacket through which the water rushes towards the discharge. The motor in little Jumbo pump is also filled with oil for lubrication and also for cooling of bearings & mechanical Seal.