Hi everyone,

I am installing a toilet and the drain pipe is 4" PVC with a back to back 90 going into the main sewer line. Is this going to be an issue? The original toilet was just a straight pipe down but the toilet has now been moved a ft out from the wall (new wall going in) hence the back to back 90's to "shift" the toilet forward.

In other words, two 90 degree elbows hooked together.

Any input on this would be great, thanks.

Two 90s is not recommended for any drain, especially a toilet. If its not too late a series of 45s would be much better.

I agree with Ballenger... If possible, two 45 degree fittings is best!

How are you venting this toilet...Hmmmmm?

Let me know... :)

MARK

The house has two 4" PVC vents, one right near the toilet.

The problem is the plumbing is already roughed in and the flooring is installed.

My first problem was I listened to the guy running the plumbing department at home depot. I tried to use two 30 degree bends but they would have been too tall when put together (I only had 12" of depth). He claimed that it was totally fine to use these two 90's, obviously now I am second guessing it!

Larson...

Since it is all roughed in and covered I would have you install the toilet and see how all works. I'm betting you will be fine!

Ideally, you would have two 45s and a vent that rolled above the centerline of the toilet drain, but the world isn't always ideal... ;) Install the toilet... quite sure you'll be fine!

MARK

And please let us know the results. Tom

Thanks guys, I really appriciate the advice, I will let you all know how it works out!