Vertical Glandless pumps are specially design to remove the problems arising from the use of mechanical seals, stuffing box gland, internal bearings and dry running in all types centrifugal process pumps. The pumps is simillar design to any converntional pump. A restriction is provide above the impeller and the need for any form of liquid seal is obviated by aloowing a small leakage to escape by way of an overflow connection in the upper pump body and return to suction vassel.
