in 141438 20080824 094954 "Tim Downie" wrote:
wrote:
Hi,

I've just fitted a couple of cast iron radiators, picture of which
can be seen here -
http://img292.imageshack.us/img292/8771/dsc00222ax9.jpg.

They warm up OK but only the bottom half of the radiators. I'm
guessing there's air at the top which is causing the problem.
However, the only valve fitted is a few inches above the outlet (you
can see it sticking out on the picture). There's no valve at the top
of the radiator.

Very weird. Never seen a radiator, cast iron or otherwise without a bleed
valve at the top. Are you quite sure that there isn't a recessed square
screw (perhaps buried in layers of paint) at one end of the radiator?

If not, I would suggest that your best bet is to contact the sellers and ask
them how you're supposed to bleed them. Without a bleed screw, they're not
fit for purpose.

Tim

My house still has cast-iron radiators, probably installed around 1940.
They are connected as 5 vertical pairs (ie from the loft to the bedroom rad then down to
a downstairs rad then back to the boiler). Only the downstairs one of each
pair has a bleed screw. I don't know why it works - to me it would make more
sense if the upstairs one was the bleedable one - but it does.