Toilet Flange Too Tight to fit in 4” drain

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Benva

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Jan 4, 2021
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Help please! I am getting ready to install Oatey quick set toilet flange, and the trouble is that the flange won’t dry fit. After I deburred and sanded inside of the 4 inch drain pipe, I am only able to push in 1/2 Now.

I have done quite bit plumbing work in my basement, never seen something like this. It appears the 4 inch drain pipe doesn’t have a smooth inner surface. I am not sure if apply PVC glue will let me to push the flange all the way in. Please advise. Thank you.
 

Benva

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Jan 4, 2021
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Location
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It should push on all the way once you clean and glue it.
thanks. As plan B, just in case it won’t go all the way in, should I immediately pull the flange out and wipe the PVC glue clean?
 
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