is it possible to change shower cartridge rather than the whole valve

[MaherShalal]

i currently have a valve/cartridge that controls only temperature is you turn it one way or the other. is it possible to remove the cartridge to replace it with one that can control both volume and flow rate? it may be about 30 years old/original to home. everything is accessible as i am re-tiling but want replacing the whole valve DIY is a bit beyond my comfort zone

 

[Deleted member 120897]

An idea of the make/model would be a good start.

 

[fowlerboi]

No. I've never seen a cartridge that isn't a direct swap so it would perform exactly as the current one