Reassure me that a shielded coupling (e.g., Fernco) is just as good

[Chesterton]

I have to splice into my 3" horizontal waste line. It's behind a wall (hidden) in the basement and will be real pain to get to now and in the future. There is no "give" in the pipe--I can't slide it around or whatever to make a traditional coupling work.

I am currently planning to use two of the 3" shielded PL to PL couplings (P3005-33).

My understanding is that I could use two PVC repair couplings. I could get the first one on without issue, I think. But I wouldn't be able to do them both at the same time. So before I did the first joint I would need to prime the heck out of the second, let it dry, then slide it onto the pipe to use later. I'd repair the first joint, then put a lot of cement on the outside of the second joint and slide the coupling over--and hope that there was enough cement to go around.

I am wary of my ability to do the second joint well--hence my plan to use the shielded couplings. I have read that they're great, etc., but every time I look at them I feel like I'm settling and that I should do it with the PVC. Can someone talk me off this ledge?!!

 

[Mr tee]

Use the shielded couplings. PVC repair couplings are a pain to use and you only get one shot at it.

 

[Sponsor]

 

[Chesterton]

Yay! Thank you.

 

[Tuttles Revenge]

They are definitely just as good and 100% better odds than PVC repair couplings. All No Hub installations use them for All of their connections.. literally millions of these installed yearly in commercial buildings.

 

[Chesterton]

OK. I am feeling much better now. Thank you!

 

[Breplum]

The shielded are what we always use. You will have to glue stubs into your new plastic fitting, or you can use a no hub wye, but then you would buy the CP300 which is 3" cast x 3" plastic...just accommodates the different o.d. that is cast iron.