Oberdorfer 406MK-4-N26 - 115/230 VAC

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  • Product Code 406MK-4-N26
  • Manufacturer Oberdorfer


FEATURES



• All Bronze Construction


• Stainless Steel Shafts


• Portable


• Compact


• Easy Impeller Replacement


• Macerator Easily Replaced


• Reversible Wear Plate


• Vacuum Switch Shut-off Optional



GENERAL DESCRIPTION



Close coupled Rubber Impeller Pumps are made


of high quality bronze for maximum corrosion resistance.


The rubber impeller is either directly attached to


the stainless steel motor shaft or the impeller is


mounted on a separate stainless steel shaft which is


counterbored on the outer end in order to slide over


the carbon steel motor shaft. Ball or sleeve bearings in


the motor support the shaft. Model 406M has a


mechanical seal. Impellers are made of Neoprene rubber,


Buna N impellers are available on request.


Flexible blades on the periphery of the impeller


provide the pumping action. While the impeller rotates,


the liquid between the blades is continuously


squeezed out into the discharge port by a cam located


inside the pumping chamber. The flow may be throttled


or shut off for a short period without the need of a


relief valve.



DRIVE ARRANGEMENT



Close coupled Rubber Impeller Pumps are


mounted directly onto the electric motor without the


use of a shaft coupling. This pump is coupled to a


standard motors with Nema C flange. It uses a bronze


adapter plate to accommodate the pump.



LIQUIDS AND TEMPERATURE



Liquids handled by Rubber Impeller Pumps with


standard Neoprene impellers are primarily fresh or salt


water and water solutions. Rubber Impeller Pumps are not


suitable for pumping gasoline or solvents. Buna N


impellers can handle oil contaminated water and kerosene


at reduced impeller service life.


Liquid temperature range is from 40o F to 140oF. If


freezing conditions are expected, the pump should be


drained by loosening the cover screws and the pump


chamber should be filled with antifreeze. Viscous liquids


and oils can not be pumped with Rubber Impeller Pumps.



SUCTION LIFT



On initial start-up Rubber Impeller Pumps must be


primed to prevent dry-running of the impeller. Suction lifts


of 15 ft. are possible when pump is fully primed. A foot


valve with built-in strainer at the beginning of the suction


line is recommended. Suction lines should be as short as


possible.