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Thread: Sump Pump Discharge

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  1. #1
    DIY Junior Member blakerapp's Avatar
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    Jun 2010
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    Galesburg, IL
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    Default Sump Pump Discharge

    I have an enourmous sump pit and I usually get a good amout of water coming in when it rains. Right now I have a Zoeller M-98 and a few weeks ago we had about 6" of rain and it just couldnt keep up. I have another M-98 I am going to put in the pit and was just curious if I could tie the two discharge pipes together? Right now I have a 1 1/2 discharge all the way to our storm sewer. If I Y the two together with check valves, would that be sufficient to handle both pumps, or would I be doing more damage than good?

  2. #2
    DIY Member bubb1957's Avatar
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    Jan 2007
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    Northern Ohio
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    I am not sure about the capacity of the 1 1/2" line, but if you have a big enough pit, consider a dual pump system which alternates pumps.
    http://www.aermotorwindmills.com/zoe...agesystems.htm. Google duplex pumps, several good systems out there.

    http://www.zoellerpumps.com/ProductB...x?ProductID=72

  3. #3
    DIY scratch-pad engineer leejosepho's Avatar
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    Nov 2006
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    200 miles south of Little Rock
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    Each pump needs an 1-1/2" line (1.77 sq in), and a 2" line (3.14 sq in) might come close to being enough for two ... and yes, check valves would keep the water flowing on out if only one pump were running.

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