Leaking kitchen mixer tap cartridge

[stephenw]

Hi, got a dripping kitchen mixer tap want to fix. Can't work out how to get cartridge out, not seen anything like the one we have on internet.
Please see attached. Any idea?!

 

[snowhead]

The blue nylon section will unscrew, just the same as any brass insert and all the cartridge will come out.

 

[stephenw]

ok thanks - have tried to unscrew but wouldn't move...I guess I'll try harder!

 

[JCplumb]

I came across something very similar a few months ago, plastic valves if it's the one I think it is. Couldn't source new valves locally so ended up with a new tap.
If you undo the screw holding the white plastic part on you should be able to pull that plastic part off and see the valve.

 

[Burger]

Have you tried unscrewing this bit first?

 

[stephenw]

Can't unscew that, that is actually the hole where the screw goes that holds the tap cover on.