Radiator bleed valve stuck

Question

The bleed valve on my radiator is stuck. I've tried loosening it up with WD40 but nothing seems to be working. Can I buy a replacement bleed valve? What else could I try to get it open? 
Thank you

Brian · Accepted Answer

Give it a gentle tap with a hammer then try turning it.
Works for me.
But make sure the 2 valves on the Rad are turned off.

Mark · Answer

Best not to tamper with it if it is stuck. If it breaks off you could end up with hot water (if the heating is on) spraying everywhere !!

Call a plumber to take a look at it, although if it is badly corroded it maybe necessary to replace the radiator.

Neil · Answer

Are you using an airing key? You can buy replacement ones for most types and easy to swap

Craig · Answer

Hi if you have tried to loosen the valve to no avail then you will have to replace the valve with a new one it can be done quickly without turning the water of if you are confident otherwise turn the water of also make sure you do it when the radiators are cold. cheers, Craig

Ian · Answer

It is very common for bleed valve to get stuck. The valve and radiator will have rusted on the inside which jams them up. If it's not coming out there isn't a lot you can do as you need to be careful not to snap it off. If it is really stuck the only way I have freed them up is drill them out  and and fit new one, but I would recommend getting plumber to do this.

David · Answer

You could try undoing the WHOLE nut very, very slowly if you are just looking to bleed the radiator. Use a pair of adjustable grips or wrench.

Zafar · Answer

Yes you can buy it new but make sure your heating is off and also your valve on the radiator is off aswell before you change

David · Answer

Depends on how old the radiator if you can get replacement

Grant · Answer

Depending on the type of radiator you can replace the valve but if it’s and old style then your best replacing the radiator

John · Answer

You need a new bleed valve 

Regards 
John Burns 
Owner/ Director 
JB INSTALLS LTD 
Bradford

Michael · Answer

Yes you can get them from any plumbers merchants or diy stores. Probably cost £3/£4. Its quite a simple job.

Dan · Answer

If you are gentle, you can release the air by undoing the nut where the bleed valve is. There are replacements you can get depending on the make of the radiator. But, if it's of age probably best just to replace the whole thing

Mark · Answer

Depressurise the system firstly , then have a replacement bleed valve fitted. Otherwise it will be a recurring problem. It shouldn't be an expensive fix

Matthew · Answer

You can get replacements for modern radiators with convectors. I think you'd struggle getting the older type.

Radiator bleed valve stuck

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