There is no heat in one of my radiators although the lead pipe is hot.
I can remove the top part of the valve, with the numbers on, to reveal a metal barrel left in the valve. I can unscrew this barrel and in it there is a metal pin which moves freely.
In the remaining part of the valve in the pipework there is a metal pin which moves very very slightly. I have pressed this pin quite hard a number of times but there is no extra movement.
Assuming this pin is the cause of the trouble and is stuck, do I have to hit it with a hammer (how vicious?) or spray it with WD40 or replace it altogether?
Thanks in advance for any help.
I can remove the top part of the valve, with the numbers on, to reveal a metal barrel left in the valve. I can unscrew this barrel and in it there is a metal pin which moves freely.
In the remaining part of the valve in the pipework there is a metal pin which moves very very slightly. I have pressed this pin quite hard a number of times but there is no extra movement.
Assuming this pin is the cause of the trouble and is stuck, do I have to hit it with a hammer (how vicious?) or spray it with WD40 or replace it altogether?
Thanks in advance for any help.