Replacing Closet Flange

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coalpiper

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Still ruminating over my closet flange challenges.

So, it looks like one ABS closet flange can possibly be replaced, although access is tight. It would involve putting a 3" coupling on the horizontal line, a short length of 3" pipe, then a 3" elbow, and short 3" vertical pipe. Then up through the floor and put on the new closet flange.

Quite a few glued joints. As this is on original construction, I worry a bit about the risk of cracking glued joints elsewhere in the piping system.

Any experience out there with this sort of thing ? Or am I over thinking this.
 

coalpiper

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I guess the other thing is … what is the best way to check for leaks in the piping after the closet flange replacement ? In a new home build don't you do a hydrostatic test ?

In the case of replacement after a new build, you don't really have that option (the hydrotest).

So do you just run a bunch of water through the new fittings setup and check for leakage ?
 

Terry

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So do you just run a bunch of water through the new fittings setup and check for leakage ?

They call that a running test.
In the crawl? Or higher than that? It's a rare day that I would have a leak on 3"
Very rare.
 

coalpiper

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The flange is on the top floor of a 4-level split. There is some access underneath, from the garage.
 
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