2020年9月19日 · My guess is that the remnant of the old toilet flange has a slightly smaller inner diameter than a 3" schedule 40 pipe. After checking that the the 3" inside flange really does fit a piece of 3" pipe, I'd chamfer the top corner of the existing opening, and then sand/scrape/otherwise relieve the inner surface of the remnant toilet flange until ...

2021年9月4日 · IMHO, a 3", inside fit flange is asking for problems. Yes, the OD of the toilet is probably less than the ID of a 3" ID flange (about 2.5" - 1/4" per side of the pipe), but it leaves little room for some toilets to turn that corner down into it.

2021年11月14日 · For a 3", inside fit flange, it's ID will be around 2.5". Some toilets try to make a 90-degree, fairly sharp bend right at their output, some make that turn IN the toilet, so when it exits, it's already pointing down, and doesn't have to try to make a sharp bend.

2019年6月14日 · Possibly the most common is a "4 in. x 3 in. " Closet Flange. It glues either outside of a 3 inch pipe or inside a 4 inch pipe. There are 3-inch inside. 3-inch outside. The 3-inch inside are often avoided because they have the narrowest passage, although that passage is still bigger than the output of a toilet. There are all kinds of variations.

2023年5月19日 · I need a toilet flange that will fit inside. The floor joist is blocking the way for an outside fit. I’ve researched and read the debates about having a 3 inch inside flange, it’s what I’m going to do. So I need a flange that will fit inside a 3 inch hub. After trying several different flanges I finally found the one that will fit.

2016年5月28日 · Ready to install my toilet flange in my basement bath (tiled over concrete) I have a 3" PVC pipe sticking out of the ground and am installing a 4" PVC toilet flange over the 3" I've been reading around a bit, besides wishing I went with a 4" PVC coming out of the ground so I can slide a 3" inside, I seem to be noticing differing opinions on ...

2008年9月22日 · Now get the flange that fit on the outside of the pipe, chip out enough concrete to allow the flange to fit over the pipe. Make sure the flange rests on top off the finished floor...NOT the sub floor. Anchor the flange to through the finished floor and into the sub floor. When you are ready to install the toilet, use a conventional wax ring.

2024年7月2日 · The suggested cutting away the top part of the 3-4 flange and mounting a 4 inch hub flange suggestion sounds very good. Sioux Chief 886-4PM looks like a good choice, and you don't have to knock out the test plug -- not that knocking out the test plug is …

2024年12月6日 · I am about to install a toilet in a brand new bathroom in a finished attic space. The plumbing was roughed in months ago by plumber. Because we had to build up the floor a little with more subfloor + Ditra + porcelain, the toilet drain elbow is a bit too low for the regular flange outlet. The elbow hub in the floor has an ID of 3.5".

2021年8月6日 · But the flange that you would use on that would be called an outside 3-inch flange. Another type of flange that could be of interest is called a "spigot" type. That would have the same dimensions as a schedule 40 pipe, and could go into the big side of …