Electric Replacements for thermosatic radiator valves

["Kevin Hawkins" <lists@xxxxxxx>]

   Does anyone know of an electrical replacement valve for a
thermostatic radiator valve. What I would really like is proportional
control using say 0-10V to allow progressive closing. I am sure these
exist as I saw them once  - I have some inline proportional valves
but
in a couple of situations I need to mount directly on the ends of the
radiators. I was told that RS did some but I can't see them. If there
was a unit with an inbuilt temp sensor too that would be great.



     Some of my radiator valves have an external
capillary connected and
a sensor which mounts in a box. Under the sensor is a little heater
that
you can apply a small voltage too to effectively change the temperature
setting but it is a bit hit and miss and I wanted to go to a more
predictable setup.



           
Kevin



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