Centrifugal pump apparatus of the magnetically-coupled type suitable for tank mounting and also including improvements in impeller and spindle structures of general application and for use with very hot liquids and corrosive chemicals.Magnetic pumps A cup-shaped motor mounting bell is provided for insertion, open side out, into a hole in the side of a tank and has a flange attaching to the tank wall. The motor is supported on mounting formations inside of the large well afforded by the bell. A smaller cup-shaped magnet well is formed by recessing inwardly on the bottom of the cup-shaped bell, Vacuum pumpswhich is also provided with sealing land closing and sealing with the open side of the pump housing. The driven coupling magnet of the pump fits into the small magnet well which is surrounded by the larger motor-driven magnet in the larger well. The pump impeller and magnet rotate on spindle means supported at both ends and which may be integrally conformed at one end with a part of the pump structure.

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2011-12-12

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