Material used for the sump pump parts makes a difference. Thermoplastic parts warp and break much easier and faster than cast iron parts. Though you cannot tell by looking at the pump what material is used for the impeller and the motor shaft, specifications will indicate what materials are used.
Specs also provide more details about the motor such as amps (ampherage), rpm (rotations per minute), voltage required, ON and OFF height of the pump, material used for the float, horse power, pumping performance at various vertical heights, and many more important facts. Be sure to read the specifications before buying to ensure you are getting the quality pump you expect.
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