Following a test period of two months, a high-efficiency SE wastewater pump with S-tube impeller cut energy use by 30% and reduced downtime from jamming incidents from a weekly basis with the old pump to no jamming incidents whatsoever. Installed in the pump pit next to a S1 wastewater pump with conventional impeller, a SE1 wastewater pump with S-tube impeller showed the advantages of this innovative impeller design, impressing the custom

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