Push button flush valves. Are they all Pneumatic?

[Unregistered]

I need a replacement flush valve for my toilet cistern.

It's this type:

SV93467 Conceala 2 Pneumatic Dual Flush Valve

Which I can buy online but I need to go into somewhere and pick one up today rather than wait for delivery. If I just bought a push button flush valve could I just swap the buttons or do they work differently for different valves?

The one I currently have looks like it works by pushing air when the button is pressed.

Thanks

 

[PlumbBobBob]

please register on the forums to get answers to your question thank you.