Pipe freeze machine - new toy!

[WC1]

Been doing ok so I treated myself to a rothy pipe freeze machine. Up to 28mm - very impressed with the tests I've done in the yard at work.
Does anyone use these, we always work on a per job rather than per hour basis and im amazed when I think of all the times I could have done with one and all the time I could have saved.
Is it possible to split a pipe esp if you freeze too close to a closed valve e.g.one you couldn't isolate easily which failed in closed position.

 

[bear]

That but was on a tee so please explain where the water will / would expand too! Single pipe (frozen) to a tee (2 options)

 

[Stigster]

Well that's that particular aspect of my theory trashed!

I can only think that despite being frozen in a single jacket the pipe froze in two places separated by liquid water and the ice plug was not one continuous piece.

It's an unusual one that's for sure mate.

 

[bear]

Very. And I do doubt the “double ice plug” as where it burst was right at the bottom of the jacket. Not a place where is expect it to freeze. We’ll never know.