Crestalux 10040188 angled rad valve

[Danfoto]

OK, I admit defeat. This valve came as part of a TRV + lockshield valve kit, and neither head-scratching nor Google has done me any good ...

The valve comes with a squared plastic knob on it to open and close the valve, and it also comes with a plain cylindrical cap. I assumed that the idea was you pull off the squared cap and replace it with the cylindrical cap to turn the valve into a lockshield, but the squared cap/knob doesn't want to come off.

Where am I going wrong here please?

 

[Billy Bob Bob]

hi danfoto have you fitted it to the rad yet?,if not when you do it will give extra leverage cap should come off then

 

[Danfoto]

Haven't fitted it yet GM - so basically I just heave on the squared cap/knob thingy i.e. it's a push/clip-on fit?

 

[Billy Bob Bob]

yes unless it has a push in disk at the top it may have a screw under it

 

[Danfoto]

Top man, GM. Thanks for that