Here are a few images
The first shows the tap with the "knob" in the middle in place
The seconds shos the taps with the knob removed
This shows a "close up of the spigot? It's a bit blurry, but it has a hexagon and on top a circular. I'll try an find a way of drawing this/...
I've put some wd40 on the mixer valve to see if it become freed up. If this works then it won't be an issue if the knob come off, because the mechanism is working OK
I have a mixer tap on my bath. I pull a knob up (between the taps ) to use the attched shower. lately it has become a bit stiff. So this morning I pulled it up and the knob came off. Small pieces of metal came out of the knob as if a thread has been broken.
Now I cannot pull up the knob with...