Replacing tap cartridge help required

[Hollyhurst2015]

Hi, I have a basin crosswater mixer tap that has started to leak at the handle. I've managed to take off the handle but need advice on how to remove the cartridge. According to manual is states ' using correct tool turn the nut to remove the cartridge' but there's not but just a blue holding ring ( picture attached). A friend told me to use long noise pliers but they dont seem to fit. Do I need a special type of pliers? Also this tap is now dicontinted by crosswater and doing a search for a replacement cartridge I was unable to find one , the model is Crosswater WD110DNC. Any advice would be greatly appreciated.

 

[Alec_t]

You might be lucky and find a deep socket spanner to fit the square section.

 

[Deleted member 267285]

Maybe use a flat bladed screwdriver to apply pressure and turn?

 

[BoilerBob]

It’s not the square you turn it’s the blue ring I think if I remember right did on years ago I put a flat bladed screwdriver in a slot and turned it that way. Bob

 

[BoilerBob]

If it’s been discontinued save the heartache and replace the tap lot easier. Bob