double clunking sump pump
Posted by Bruce on January 16, 2004 at 14:02:44:
In our basement, we replaced our float switch (after the original failed and consequently our sewer backed up). Now the new float switch often activates twice in a flushing of the catchment basin. We pump up to our septic tank, which is in our back yard. Is our check valve going, and thus water is returning to the catchment and activating the switch again?

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