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Why drill the 1/8″ hole in the PVC pipe?

April 26, 2017drill hole pipe PVC

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Why drill the 1/8″ hole in the PVC pipe?

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The purpose of the 1/8″ hole is to prevent the pump from becoming air locked. A pump that is air locked cannot pump water. This hole should be drilled approximately 3″ above the pump at a 45° angle directed downward, so the water will flow back into the sump pit.