Old locksheild valve how to turn off water

[Smellypunks]

So I am going to take this rad off the wall but it has a locksheild of a style I have not seen before. The screw is for the plastic top cover. Then there is a cog, if you will, which I am guessing turns off the water. Has anyone worked with these before? What tool do I need to shut off the water? I don't really want to drain the whole system for one rad.

thanks

 

[Exedon]

Maybe a screwdriver slot under all that crud in center?

 

[Smellypunks]

Spot on. Now I just need to get it moving. thanks

 

[gas112]

those valves usually leak when turned back on , if you can get it to move after all the years its been in

 

[Smellypunks]

those valves usually leak when turned back on , if you can get it to move after all the years its been in

Do you suggest draining the system and changing the valve?

 

[gas112]

Do you suggest draining the system and changing the valve?

from experience yes i would change the valve you can see from the crude that its already been weeping ,