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Sump pump drain pipe with 2 opening ?

Cats3
11 years ago

My sump pump drain pipe has two opening. The first one is located right next to the foundation wall as you can see from the picture. Yesterday it was raining a lot and I saw a lot of water gushing out of this opening. About the other 30% were flowing into the the lower opening. Why does someone put PVC wye on the draingage pipe? I think some water will return back sump pit if the water discharge thru the first opening. My pump was running every few minutes yesterday. Can I just cap it off?

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