undo a cast iron rad leaking bleed valve that will not budge

[lbhomesolutions]

The bleed valve is screwed in fully but the little hole underneath still leaks water, so i assume it needs replacing the only problem is is that it will not budge. i have tried every spanner, wrench and mole grips i have but it will not shift!
Can anyone give me some ideas to try and remove it?
Heat does not work either

many thanks

 

[wiggikins]

You state that you have tried the application of heat to try and budge the
vent valve body. ? Have you attempted this procedure with the radiator empty? If not, have a go at that and let us know how you get on.

 

[lbhomesolutions]

You state that you have tried the application of heat to try and budge the
vent valve body. ? Have you attempted this procedure with the radiator empty? If not, have a go at that and let us know how you get on.

Hi there i drained the rad and took it outside and heated it but to no avail and the nut is getting more round shaped then a hexanganonal nut now

 

[wiggikins]

Greetings,
How about filing a couple of "flats" on the rounded off hexagon,applying heat until cherry red and then trying again .If this fails i don,t really see an alternative to drilling and re-tapping the vent valve.

 

[John M]

Plusgas ........ & a gooooooooood long soaking wiv it ........... Stick some cotton wool (See the Mrs, failing that check out the bathroom cabinet) around it & try keeping it moist ........ Overnight would be good....... If that don't do it ........ Ya in the Poo