In an earlier contribution to this discussion,
Andy Champ wrote:

Roger Mills wrote:
In an earlier contribution to this discussion,

Not necessarily. You can often free them by removing the actuator and
turning the valve spindle with a pair of pliers.

When I had a Y-Plan system, I used to exercise the CH every day in
the summer in order to heat up the bathroom radiator for an hour to
warm the towels (all other rads turned off). This made the valve
much less likely to seize.

I take it that that carefully chosen minimal edit was a waste of
effort then?

Andy

You what?
--
Cheers,
Roger
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