Adjusting metal soil pipe

[Jupiter01]

ive got this metal soil pipe that I need to alter to take a inlet from my 40mm waste and the pan connector.
This is the picture from underneath:



And from within the bathroom:




Is this permissible and can I cut this using metal grinder?

Once cut, which fitting do I use before I use the appropriate 110mm fittings?

Thanks in advance.

 

[dilalio]

You need to try and identify the metal soil.
Looking at your photos, it appears the joint between metal and plastic has been made with a gap filler and haunched in... Is that sand and cement or some kind of putty or silicone? I'd chop away at that joint and get an internal and external diameter of the metal pipe, then you can search the mcalpine website to see what mechanical fitting can be used as a transitional coupling.
And, I take it you've made sure no asbestos is used in the the construction? Looks very council-built to me

 

[Jupiter01]

I can remove the plastic part first to take a look. Good plan!

Is the metal pipe likely to contain asbestos?

 

[dilalio]

Is the metal pipe likely to contain asbestos?

Not the pipe, I was just thinking the last time I did a bathroom in a block that looked like that, we found asbestos used in the make up of the bulkhead riser boxing in, but it was serving 3 flats, so had to have fire proof compartmentalisation (if that's a word )

 

[Jupiter01]

Oh I see. I did rip off the boxing for this but it definitely looked like plyboard screwed to some wooden battens. I still need to tackle the task of altering this soil stack and its at the top of my to-do list for next weekend. I will drop an update on how I get on.

Q. Can you please advise on which fitting should be coming out of the floor to receive the toilet pan? I know its he 110 pipe but should it have a rubber seal or not, male/female? A picture of this would be very helpful.

 

[dilalio]

Depends on the pan you're going for and how far away from the soil it will be. If its an open backed close couple then you usually have a bent pan Con connecting into 110mm pipe at floor level. If it's fully back to wall you'll need a pan con that's fixed in position so you can push back into it... I linked to this before in another post, its this one...

https://www.duravit.co.uk/products/all_series/accessories.com-en.html?product=104886

 

[Jupiter01]

I will be purchasing a close coupled toilet and connecting the pan via a vertical connector (or flexible) into the ground. I am slightly unclear on what sort of 110mm pipe I need to have at ground level.

Is it for instance one of these with a rubber ring or a different type?

 

[Jupiter01]

Hi @dilalio, can I have your advice on the above fitting please? Thanks for your help

 

[dilalio]

Hi @dilalio, can I have your advice on the above fitting please? Thanks for your help

I don't know if that's the "exact" fitting you need as I assume you'll be connecting the bath and basin to one of the bosses on the front or side. So, depending on heights you're trying to achieve, you may need 2 separate fittings (to keep one below the floor for bath waste and one up higher for wc)?

However, yes... That top female connection would néed a short bit of 110mm pipe put into it and then the pan con goes into the pipe... Or, you could use a solvent weld female with a bit of pipe in it... Which I'd prefer to use.

 

[Hugh Jaleak]

Curious as to what the metal is, lead or steel? Looks too shiny to be cast iron.

 

[Jupiter01]

Thanks @dilalio.

Sorry for the scant info in the earlier post. My current thinking is that I will have a T put into the current metal soil pipe. This will come out at the floor joist level (below bathroom floor). There will be a small section of 110mm pipe in the inlet pointing in the joists. At this point I need a connector which can take the toilet pan (this will push the toilet inlet towards the wall which is required for a close coupled toilet) on the top and a single 40mm bath waste. The basin waste will merge into this 40mm bath waste upstream.

Which fitting do you recommend for this please?

 

[JohnD]

the colour suggests galvanised steel to me, which I have not seen in a house before and may need special fittings. Please test it with a magnet. is it by any chance a converted industrial building? What county are you in?

 

[JohnD]

BTW you can still get a WC to fit that floor socket. Often called "bottom outlet" pan. Please measure the distance from the wall to the centre of the socket (accurately)

It may save you a lot of trouble and expense.

By major British makers in a modern close coupled design, if that's what you want.

For example Twyford E100, and Alcona, in BO versions. There are not so many to choose from. The distance from wall to socket is very important. You can chip away the plaster or add a batten to move an inch or so, or add a small shelf as spacer if necessary..

Alcona

Grohe Bau

Twyfords E100 (this is the "Premium" with the smart easyclean base). I got this one because it matched my wall/socket distance and find it excellent.

https://www.twyfordbathrooms.com/suites/e100-round/#gref
note that you need the "BO" version.

Some unbranded foreign imports have an ineffectual flush, so I trust established makers better.

 

[Jupiter01]

Tell me more @JohnD
The distance from the back wall (before tiling) to the centre of the floor socket is 25cm. I was told by B and Q that this is too much for a closed coupled toilet. Apparently, I can only ahve the separate pan and cistern with this gap. This is incidentally what was in there previously. Based on this, I was planning to set this inlet further back.

Also, please note that my new waste pipe needs to connect into "something" too.

Awaiting your response.

 

[JohnD]

the e100 has a distance from CENTRE of socket, to wall, of 215mm. So if you have a gap of 250mm you would need a 35mm batten, which is not much. Alcona is 205. Some other designs have a different spacing. I have not trawled the market recently. ISTR that there is an import called "Atlas." I wanted the smallest possible projection from wall.

If you call Twyfords, Armitage and other well-known makers they may have a suggestion.

BO pans are not sold in great numbers, so a retailer would probably have to look it up and order it in. I got mine from QS at a good price but they no longer list it.

Some of the other contributors on this forum may also have suggestions.

B&Q assistants may not be fully informed. My examples are close-coupled.