On Sun, 24 Aug 2008, Tim Downie wrote:

se 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?

Well, there is a notch which looks like it's there to take a flat bladed
screwdriver (you can see it at the top in the centre of the circular
piece). It has one on each end. It might be for the tie rid, that said
there's a seperate tie rod underneath.

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.

I bought them secondhand a few years ago, so no comeback I'm afraid.

How does the water flow through these? Is it a common feed at the bottom?
Or does it flow up and down the first section which then feeds the next
one?

Steve.