Balancing radiators with old valves

[I_JL96]

I am currently in the process of balancing my radiators. Most of my radiators are new and have new valves, however two of them are old and have these valves on them. Are these lock shield valves? And if so how can I turn them for balancing? These older radiators are heating up super fast and preventing my newer radiators from heating up as quick. There were no caps on them btw.

 

[terryplumb]

Yes ,that's a lockshield. Flat bladed screwdriver used to adjust.

 

[I_JL96]

Cheers mate, it’s pretty jammed! Will it budge with a thick flat head screw driver?

 

[terryplumb]

Maybe ,maybe not. What valve is on the other end ?

 

[I_JL96]

This one, think to adjust the heat.

 

[terryplumb]

Use that one to balance ,it doesn't look like it's been used to control heat !!! And leave the other one with a slot alone !

 

[I_JL96]

Thanks, this one did have the screwed on cap with the plus and minus sign on. I might just replace all the old valves.

 

[terryplumb]

Up to you ,but you can use that to balance.

 

[fixitflav]

This one, think to adjust the heat.View attachment 284825

You can use that as Terryplumb says, but don't expect 1 or 2 turns to do much. likely to need to be less than 1/2 turn back from fully closed.

 

[gas112]

dont touch the screw driver slot one as they usually leak