Flexibly coupled, electrically driven horizontal foot-mounted single-stage (KO), double-stage (2KO) or three-stage (3KO) end suction volute-casing centrifugal pumps with overhung impeller(s) and bearing bracket. The pump rotor is carried by grease-lubricated antifriction bearings. Shaft sealing: by a soft-packed gland or a mechanical seal.