Can anyone tell me what this part is please? Soil stack

[redfrog]

Hello all,

New to the forum so thanks very much in advance for any feedback and look forward to helping if I can.

I am looking to plumb in a new downstairs toilet therefore I need to cut into the stack and fit a branch and slip coupling. As you can see from my photo there is a coupling piece (or something similar) at the bottom of the stack which I need to remove to allow the new branch to sit low enough. My question is, does anyone know what this part is (it is separate from the part that you can just see at concrete level) and if I can remove it to allow the branch to push in to the required depth?

Any help would be much appreciated.

Thanks very much.

Dan

 

[Scally-Ho]

From that photo, you seem to have a below ground plastic double collar (maybe slip) coupling connected to grey standard above ground soil pipe. If more were exposed, then a more definitive answer could be offered.

 

[redfrog]

Hi,

Thanks very much for your advice. Much appreciated.

Dan

 

[Madrab]

You will need to cut down around the in ground soil pipe to see what it is - depending on how old the property or area the soil pipe is will will determine what that coupler is connected to. How much of a stack is above it?

It should be a compatible sized pipe otherwise the current coupler wouldn't fit

 

[redfrog]

Thanks very much.

I have been looking around and I wonder if it is a universal pipe connector. The top of the fitting is a socket and the bottom looks like it has some kind of stop ring around it to prevent it from falling in further and to maintain a tight fit. The stack runs about 2.2m above this to the upstairs toilet branch. My plan was to cut the pipe in two places, about 300mm apart, remove this section, remove the soil pipe from the upstairs branch (rachet the branch in place to hold the stack above in place), remove the stack below this cut, remove the universal fitting/coupling, fit the lower branch, fit new stack above this and into branch above using a slip coupling. Any thoughts on this?

Many thanks.

Dan

 

[Scally-Ho]

As I stated before; expose more below ground for a more definitive answer.

 

[redfrog]

Also, my theory for removing the existing soil pipe below the upstairs branch and replacing with new is so that all the cuts/prep and chamfers can be done properly on new pipe in an area where I have space and is clean.

Cheers.

 

[redfrog]

Sorry yes, I was going to do that first before I did anything.

 

[Hugh Jaleak]

Looks to me like a Standard 110mm coupling, used to join the above ground soil pipe to the underground drain section. If you want to connect any lower you'll have to dig some of the floor out and cut the pipe a bit lower down.

 

[redfrog]

All sorted. Thanks for your advice all. Much appreciated.