OK, I give up!
How on earth do you separate a 40mm push-fit FloPlast connector?
Neither I nor the guy in Scroofix could work it out.
I'd experiment if I had lots of spare 40mm pipe, but I don't. No collet no collar except one that just seems to turn, very reluctant to trial fit one on a bit of pipe just to find out,
@brianp38dse is you there?
You dont