push fit soil pipe

[squarepeg]

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 tight-fitting rubber seal.) I've tried brute force, and I can twist the whole stack, but I can't disconnect the y-piece!
Thanks in advance

 

[muggles]

Go to a plumbers merchants and get some silicone lubricant spray, spray it liberally into the joint, wait a minute or so then try again. Should free it up...

 

[jas05]

Get someone to hold against you using an oil filter removal strap wrench round the soil pipe then twist the branch out.

 

[squarepeg]

Thanks

 

[Adrian80]

Dont do it when its hot.

I was putting together some fittings in the summer, murder to get together and then get apart. Freezing cold winter day no problems.

freeze spray???

A

 

[squarepeg]

Unfortunately we may not have a choice...got to get it out of the way for the plasterer, can do it at night though! Freeze spray may be the option, thanks for the suggestion

 

[seco services]

try taking the ring off that holds the rubber seal in.

 

[Whitespirit66]

If you need to get some grip on the pipe to turn it out of the fitting, one of these Boa strap wrenches often helps -

http://www.bexpress.co.uk/pageview.php?page=show_product&ecommerce_stockcode=BOASTD

They grip much better than an oil filter strap wrench. To work properly, make sure that the pipe suface is grease free, and slightly roughening it with some medium grit sand paper helps it grip even better.

 

[squarepeg]

Thanks for the recommendation, I've often looked at these, but wasn't sure they weren't a gimmick. I'll go shopping now