Welded toilet waste?

[Ollyfp]

Here we go again! So... I need to reconfigure the pipework for our new bathroom, but rather than being push-fit, this 110mm(?) black pipe (fitted in 1966 ) appears to be glued! It just won't budge! Any advice would be very welcome!

 

[stevie888]

I'm not a plumber but that looks like push fit to me. I don't think solvent weld 4" was around back then

 

[Ollyfp]

Thanks Stevie888. I think you're right. The bulges indicate that there's a ring seal. Thing is, I twisted with real force and the pipe was creaking as if it would crack! I'll try again...

 

[Ollyfp]

Or I might actually get a plumber in! Stranger things have happened!

 

[freddiemercurystwin]

push fit soil pipe

I'm trying to disconnect some of the fittings from the top of an internal soil stack, so that I can alter the position of the toilet. This sounds like a silly question, but are there any tricks or tips for disconnecting the push fit soil pipe? (as far as I'm aware, it's pipe with a...

www.diynot.com

 

[Hugh Jaleak]

If that pipework was indeed fitted in 1966, then I'd be leaving it well alone. The seals will be rock solid, which is part of the reason they wont budge, and in the event you do get them to break and move, I suspect it is highly likely they will never seal again. You may well then find yourself with an even bigger issue.....

 

[Ollyfp]

If that pipework was indeed fitted in 1966, then I'd be leaving it well alone. The seals will be rock solid, which is part of the reason they wont budge, and in the event you do get them to break and move, I suspect it is highly likely they will never seal again. You may well then find yourself with an even bigger issue.....

Thanks! What if I make a clean cut at a point close to the wall and replace the rest with new? Can new soil pipe components be joined to old, or is there a size difference?

 

[Ollyfp]

I did cut the old 'through roof' vent pipe down and the AAV fitted well enough. I'm guessing that means that new and old are compatible?

 

[Hugh Jaleak]

I did cut the old 'through roof' vent pipe down and the AAV fitted well enough. I'm guessing that means that new and old are compatible?

Yes, that's one thing that hasn't changed in 60 odd years, the diameter of soil pipe remains 110mm, and is standard across all the manufacturers.

Cut carefully, fine toothed I'd say is probably your best bet, the plastic can go brittle over time, and shatter/crack. (And dont forget to chamfer the cut edge before trying to put a fitting on!)

 

[Ollyfp]

Great advice! Much obliged to ya!