Toilet flange question

Old 01-12-17, 02:07 PM
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Toilet flange question

I have a three inch waste line in my basement bathroom. The flange that was on that line was a four inch that fit over the outside of the drain pipe. I purchased a three inch flange to fit inside the waste pipe as there isn't a whole lot of room on the outside of the pipe to get a new four inch over the pipe.

Will the three inch that fits inside the pipe work well or should I go back to the four inch flange?

By the way, the flange I removed was leaking bad. The previous home owner did not have the flange installed far enough down on the outside of the pipe. There isn't a lot of space there so I thought maybe this internal pipe flange would do the trick.

Old 01-12-17, 02:26 PM
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The three inch flange will work just fine. Be sure to orient it properly so the hold down bolts will be at the 3 and 9 oclock positions.
Old 01-12-17, 07:28 PM
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Yup, no problem with what you purchased.

They have 3/4" flanges that work on either pipe size. For 3" pipe, they go on the outside, 4" on the inside.

Also don't forget to screw/tapcon it to the floor. The pipe isn't meant to hold the toilet and flange in place, the screws into the subfloor are.

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