In article , Greg W
writes
On Mon, 8 Dec 2003 17:59:31 -0000, "BillR"
wrote:



Drain the system and remove the 2m of pipe.
You may be able to do it without draining by using one of those pipe freezer
kits.
Inhibitor is best injected into rad air vent plug using one of those Fernox
cartridges, nb they are around £20 retail...


Thanks - however, the pipe is under some original wood flooring which
I don't want to ruin by taking up, and above a newly plastered ceiling
I'd hate to poke holes in for that very reason. Any fix which doesn't
involve removing the pipe?

If you still have access to the capped ends of the pipe, fit vent caps
instead & bleed as you would a radiator. Buy at a plumbers' merchant or
DIY shed. Example here, but they charge for postage:
http://www.bes.ltd.uk/products/148a.asp code 6793, half way down.
You'll need one on both capped ends.
--
fred