"This was the last piece needed to connect our new power shower into a short piece of existing 28mm copper pipe.
So squeaky-bum time came, I drained the system down, measured and marked the pipe and cut through with a pipe slice. Got my son to heave the cylinder over, popped in the plastic tee, and it was fitted in seconds. No hemp, putty, blow lamp, solder, flux or hassle. And no leaks since either."