bleeding radiator

[lavjohn]

I have a small double radiator that is only heating on front panel after I had to drain and refill the system. it has a normal key opened bleed valve on the front panel but a strange looking object, like a brass nut with a hole on each face and what looks like a button on the end, in place of the bleed valve on the back panel.....

If this doesn't make any sense I can post an image...

Don't want to brake it buy pulling, pushing, or twisting to hard as nothing seems to move!

 

[gas4you]

should be same on both panels. perhaps someone has 'altered' rad in past. pic please?

 

[lavjohn]

Sorry I didn't realise that you had to link to a pic rather than just post one
i have taken a photo but don't have any were to post it