I have several radiators where the bleed valves are jammed (corrosion?).
I had to take one to a metal worker where he sealed off the old valve
and installed a new one, rather a PITA. Any ideas that I could try to
free them? With the original problem I tried to force it and b*ggered it
up.

Broadback wrote:
I have several radiators where the bleed valves are jammed (corrosion?).
I had to take one to a metal worker where he sealed off the old valve
and installed a new one, rather a PITA. Any ideas that I could try to
free them? With the original problem I tried to force it and b*ggered it
up.
If they are standard rads with a bsp tapping on each corner then
assuming the water entry exit at at the bottom, the 'unused ' tapping
can have a complete new bleed valve fitted leaving the seized one in situ.
Available from toolsatan and other likely suspects

https://www.toolstation.com/m/part.html?p=69952 67p each

Otherwise drain to a few inches below the bleed valve level apply lots
of heat to crack the paint/rust/crap that is jamming it and wind it out
- usually the square drive end of a socket set will fit well enough to
get lots of leverage on it.

On Tue, 18 Mar 2014 16:24:52 +0000, Broadback wrote:

I have several radiators where the bleed valves are jammed (corrosion?).
I had to take one to a metal worker where he sealed off the old valve
and installed a new one, rather a PITA. Any ideas that I could try to
free them?

Presumably your mean the little square headed brass bit has seized.
Just remove the whole plug and bleed screw, and replace.

--
Cheers
Dave.

On Tue, 18 Mar 2014 16:48:03 +0000, Bob Minchin wrote:

... and wind it out - usually the square drive end of a socket set will
fit well enough to get lots of leverage on it.

If it also has a hole in the middle to accomodate the bleed screw.
The tool used for fitting radiator tails normally has a square drive
with recess for fitting/removing the
plugs.

http://www.toolstation.com/shop/Hand...Tools/Rad.%20&
%20Valve%20Spanner/d10/sd210/p90498

http://tinyurl.com/odme2yg

--
Cheers
Dave.

On 18/03/2014 16:24, Broadback wrote:
I have several radiators where the bleed valves are jammed (corrosion?).
I had to take one to a metal worker where he sealed off the old valve
and installed a new one, rather a PITA. Any ideas that I could try to
free them? With the original problem I tried to force it and b*ggered it
up.

Is the bleed screw itself part of a larger assembly which screws into
the end of the radiator, or does it screw into a small hole tapped
directly into the radiator?

If the former, you can easily replace the whole assembly. If the latter,
it's more difficult!
--
Cheers,
Roger
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On 18/03/2014 19:22, Roger Mills wrote:
On 18/03/2014 16:24, Broadback wrote:
I have several radiators where the bleed valves are jammed (corrosion?).
I had to take one to a metal worker where he sealed off the old valve
and installed a new one, rather a PITA. Any ideas that I could try to
free them? With the original problem I tried to force it and b*ggered it
up.

Is the bleed screw itself part of a larger assembly which screws into
the end of the radiator, or does it screw into a small hole tapped
directly into the radiator?

If the former, you can easily replace the whole assembly. If the latter,
it's more difficult!
Thanks for all the tips. It is a fairly old ( circus 2000)so the valve
screws directly into the radiator, also there is only 2 entry/exit
points at the bottom of the radiator, so it looks as though I will have
try the heat method.