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Vertical Centrifugal Pump can operate normally without shaft gland and shaft gland water even lack of intake. SP pump body is made from antifriction me<x>talthe impeller is made from antifriction metal or rubber and polyurethane. Submerged parts of the SPR pump coated rubber for transportation corrosive slurry.
The SPR and SP vertical centrifugal pump designs, manufactured in popular metric sizes, provide a simple, yet rugged range of sump pumps specially developed for:
-Abrasive and/or corrosive slurries
-Large particle size
-High slurry densities
-Continuous or “snore” operations
-Heavy duties demanding cantilevered shafts
Bearing Assembly -The bearings, shaft and housing are generously proportioned to avoid problems associated with the operation of cantilevered shafts in the first critical speed zones. The assembly is grease lubricated and sealed by labyrinths; the upper is grease purged and the lower protected by a special flinger. The upper or drive end bearing is a parallel roller type whilst the lower bearing is a double taper roller with preset end float. This high performance bearing arrangement and robust shaft eliminates the need for a lower submerged bearing.
Column Assembly - Completely fabricated from mild steel. The SPR model is elastomer covered.
Casing - Has a simple bolt-on attachment to the base of the column. It is manufactured from a wear resistant alloy for the SP and from moulded elastomer for the SPR.
Impeller - Double suction impellers (top and bottom entry) induce low axial bearing loads and have heavy deep vanes for maximum wear resistance and for handling large solids. Wear resistant alloys, polyurethane and moulded elastomer impellers are interchangeable. The impeller is adjusted axially within the casting during assembly by external shims under the bearing housing feet. No further adjustment is necessary.
Upper Strainer - Drop-in metal mesh; snap-on elastomer or polyurethane for SP and SPR pumps. Strainers fit in column openings.
Lower Strainer - Bolted metal or polyurethane for SP; moulded snap-on elastomer for SPR.
Discharge Pipe - Metal for SP; elastomer covered for SPR. All wetted metal parts are completely rust protected.
Agitation - An external agitator spray connection arrangement can be fitted to the pump as an option. Alternatively, a mechanical agitator is fitted to an extended shaft protruding from the impeller eye.
Materials - Pumps can be manufactured in abrasive and corrosive resistant materials.
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