The glandless pump is a specially designed centrifugal pump type, generally driven by a squirrel-cage induction motor whose rotor and shaft rotate in the fluid being pumped.
There are two distinctive designs of glandless pumps, one with dry stator windings (Canned Rotor Motor) and one with wet-stator windings (Wet Stator Motor).
Typical applications for canned rotor pumps are as heating circulating pumps, process pumps for the chemical industry and process engineering and as nuclear reactor pumps. Wet stator pumps are mainly used as submersible pumps in wells and for circulating duties in conventional power plants.
Basic Pump Designs
Canned Rotor Pumps
Glanded (Dry-Motor) Pump