Noticed a possible issue with my bathroom radiator?

sho_me_da_money

To be short n sweet, the bathroom radiator was piping hot at the bottom and luke warm at the top indicating trapped air.

I've released the air and fired on the CH.

The issue, I see is that one valve is open (TRV side) and the other is tight closed. Shouldn't both be fully open?

Thanks.

macman

No, the lockshield valve should not be wide open, it's there to balance the flow, which would have been done originally by the installer. However neither should it be completely closed. More likely it's just seized at the original setting.
If you have bled the rads, remember to repressurise the system if you have a combi system.

sho_me_da_money

macman wrote: »

No, the lockshield valve should not be wide open, it's there to balance the flow, which would have been done originally by the installer. However neither should it be completely closed. More likely it's just seized at the original setting.
If you have bled the rads, remember to repressurise the system if you have a combi system.

Yea re-pressurised to 1.5 Bar.

What I may do is go round and un-sieze each lockshield valve and make sure it's loose but not fully open.

I do actually have one rad that is warm at the top and cold at the bottom indicating sludge build up. Is this a simple case of removing the rad and hosing it through?

Cheers for any tips/advice.