On Fri, 03 Oct 2008 03:27:11 +0100, John Rumm wrote:

Just don't do what a mate of mine did... needed to get a compression
service valve onto a rad feed and return pipes such that they could be
split to add a new rad. I had described the technique well enough I
thought - I was upstairs when I heard the yell. Came down to find one
rather wet looking chap standing next to a rad tail with service valve
attached, and a floor and ceiling covered with black gloop! He said,
"you can do the other side!". So, cut, wiggle, thumb, pre-assembled
valve on and held down to obstruct 85% of the flow, quick turn with a
spanner to halt the rest, before finally tightening into final position.
While watching he then said, "oh, I see - you put the whole valve on
in one go..."

Turns out that having cut the pipe, he then set about sliding over first
the backnut, then olive, then valve body, all the time doing the thumb
hokey-kokey before finally attempting to get them all together and doing
up the nut.

ROFL, that needs to go in the FAQ next to Expanding Foam. B-)

--
Cheers
Dave.