Are all toilet flush valve cradles different?

[longbloke23]

I've got a toilet with concealed cistern - can access from above but would need to break tiles to get under or to remove the cistern.
Flush button and valve are Dudley vantage pneumatic dual flush.
I need to replace the button, and am looking at other options for both button and flush valve - but because I can't get below the cistern, am I stuck with the vantage/niagra range or could I swap out the flush valve with a different brand that would fit into the vantage cradle? Thanks.

 

[Elkato531]

Like for like swap is needed. Or bite the bullet and remove the cistern. At the end of the day, its bonkers to have a toilet that can't be properly maintained because of impossible access.

 

[longbloke23]

OK, thanks - suspected that would be the case but thought I'd ask on the off-chance...
Totally agree about the bonkersness of it being tiled in the way it is

 

[Madrab]

You may find that the Dudley Victoria (cable) drop valve might use the same fitting, would make sense that it would be cheaper, from a manufacturing point of view, to use the same fitting

 

[longbloke23]

Thanks - good thinking - will take a look