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  • Users: HkyJky
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  1. HkyJky

    Loose Impeller Nuts

    I have a duplex sewage pump station rated at 1,200 gpm pumping against 250 feet of head. Over the past year, both pumps have had the impeller nuts loosen to the point where the impellers dropped and contacted the wear rings on the volutes. Manufacturer stated that impeller nuts are lock nuts and...

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