Vertical shaft pumps like horizontal shaft units, must be firmly supported. Depending upon the installation, the unit can be supported at one or several elevations. Vertical unit are seldom supported from walls, but even that type of support to sometimes encountered.
Occasionally, a nominal horizontal shaft pump design is arranged with a vertical shaft and a wall used as the supporting foundation. Regular horizontal shaft units can be used for this purpose without modification, except that the blade-plate is attached to a wall. Careful attention must be given to the arrangement to the pump bearings to prevent the escape of the lubricant. Installation of double suction, single-stage pumps with the shaft in the vertical position are relatively rare, except in some marine or navy applications. Hence, manufacturers have few standard pumps of the kind arrangement so that a portion of the casing forms the support (to be mounted pumps on soleplantes).
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