On Sat, 7 Aug 2010 14:36:40 +0100, Fredxx wrote:

"PeterC" wrote in message
...
I'm adding another radiator to a room; it'll be on the outside wall the
same as the present one. The gap will be only about 10cm or so, room to
get
valves in.
Instead of fitting valves to both rads., I was wondering about just
connecting them in series with a bit of pipe. Is there any major drawback
to this method?

If the radiators are largish, I would avoid putting 2 in series. The second
one would be cooler and less efficient. I also can't see how you could fit
thermastic valves which would work for both rooms.

They're 1200mm and within 10cm of each other in the same room. No TRVs as
they'd argue with the 'stat.

If you were hell beint on fitting them both in series I would consider
fitting a top pipe as well. Then both rads would have similar top to bottom
temperature gradients.

That's easy to do as a retrofit.

You ought be able to get right angle lockshield valves within 10cm.


--
Peter.
The gods will stay away
whilst religions hold sway