Removing Concealed Thermostatic Shower Valve Plate

[outmyway]

I'm trying to remove this shower valve face plate.

The plate retaining rings are stuck to the plastic collar and the plate, they won't budge.

Anyone any ideas please?

Shower-plate

• outmyway
• 7 Dec 2021

Face plate retaining rings

 

[RandomGrinch]

Hi,

I'd have a go with something like Cillit Bang 'Limescale and Grime' to start with.
Give the rings a good soak to try and get rid of that limescale - rinse and repeat!

 

[HERTS P&D]

Its siliconed on, Sharp thin bread knife, slipped around the edge between the shower plate and tiles.

Andy

 

[outmyway]

Thanks,

I had assumed those chrome rings were screwed to the brass assembly behind.
but looking at another one of these it looks like they are just spacers.

Next question:
How can I remove the cartridge?

I tried turning the black plastic nut but it started to disintegrate

 

[outmyway]

Shower-plate2

• outmyway
• 7 Dec 2021
• 1

Cartridge

 

[HERTS P&D]

Do you have a socket set that would fit?

Andy