Replacing double wye

[WhoMe]

I have 2 four inch schedule 40 PVC pipes running horizontal into a 4 inch double wye with a clean out going through a ten inch poured wall to the septic. The wye is leaking inside the wall back into the basement and when I look in the clean out I can see the pipe into the wye is on an angle causing the leak. Is the double wye the only fitting to use, from what I read using a tee flat is a no no. I also see a double 1/4 bend but can't find much info and proper position for use. The thing I don't like about installing a new double wye is the fitting is so tall it has to go 4 plus inches into the wall, but if that's the code that's the fix, just looking for any options.

 

[wwhitney]

If you don't want to reconfigure the two horizontal lines coming in from the sides of your picture, a double wye is the only option.

If you were able to move both of the horizontal lines ~6" higher and possibly farther off the wall, you could use a 4" double sanitary tee with the barrel at 45 degrees off plumb, with the top as a cleanout, and a street 45 in the outlet to come out horizontal.

Cheers, Wayne

 

[Sponsor]

 

[Mr tee]

A double 1/4 bend is an illegal nod horrible option. That is a rarely used vent fitting.

 

[Sylvan]

https://www.pvcfittingsonline.com/4...QsWzAc4rJRfclQ-dWtv55qV-yLWprcgRoCN1wQAvD_BwE

Or


https://www.amazon.com/Canplas-1941...ocphy=9004177&hvtargid=pla-305378858562&psc=1

 

[wwhitney]

I don't think the double fixture fitting is for use on the horizontal, it doesn't have the same radius as a double combo, does it? Also, Charlotte at least doesn't make it in 4", and the one linked to is 3".

As for the double combo, my understanding is that it's important to use a 3 piece one, i.e. a double wye plus two street 45s. The one piece double combo is planar, so the two side entries would be flat with no slope at all. With a double wye and street 45s, you can tilt up the 45s a little to get the requisite 1/4" or 1/8" slope.

Cheers, Wayne

 

[Reach4]

delete