Lock shield valve question

[GregT95]

Hi, hoping someone can advise. I have one radiator that is not heating. I have checked that the pin is up on the TRV and the radiator does not need bleeding. After some research on the internet I came across checking that the lock shield valve may need opening. However there is no spindle to adjust it on the make I have see photo. Any ideas? Thanks

 

[JohnD]

when did this radiator last work?

Are all the others hot?

Turn off ALL the others. Does the cold one now heat up?

 

[GregT95]

Thanks John. Will try that. Radiator and valves were replaced along with a load of others a little while ago. Don’t think this one ever got warm from memory.

 

[Daveydub]

Can't see it on your photo but is there a screw inside the hole in the hexagon part? Often requires allen key but sometimes slotted screwdriver. Anti-clockwise to open looking down on it.

 

[GregT95]

Yep Allen key fits will have a look at that as well. Many thanks