Help to identify Thermostatic shower cartridge, please

[gj57830]

Hi, I need to replace the cartridge on a shower installed in 2007 and I can't find any identifying marks apart from a sticker that says CKL Sch. I've tried the local plumbing stores but they can't identify the cartridge.

It has a 40 mm thread.

4 photos below and any help would be much appreciated.

Many thanks!

 

[Deleted member 120897]

Im not able to help, and some on here may not, but perhaps try these

 

[rpm]

You could send the photos to Shower Spares & Replacement Shower Parts | The Shower Doctor - https://www.showerdoc.com/ but I hear they can be slow to reply, another is Shower Thermostatic Cartridge Spares - https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwj49IrIuOb5AhUG7e0KHSzvCkwYABA6GgJkZw&ohost=www.google.com&cid=CAESa-D2y1fa_OmE1CZu7sBH5KODHWnQ0apyAQLOs4b_xff-0SeOhHog7J4AuzikdnLkKWE9Df-V5GbOGVtPUFSIBXoOLuW-RTnpYv49s5LHJh0bJaY3BSlA7YAlJF0UaKqYLMI_Czb1yC9YwfOr&sig=AOD64_2AXjDQrMxZ__smXQ0TuRD3RyhFug&q&adurl&ved=2ahUKEwi10oTIuOb5AhUagFwKHU3hBsIQ0Qx6BAgCEAE