replacement for air admittance valve Ayrlett 6?

[timurray2000]

I’m having trouble finding a replacement for this valve.

It seems to have a 1-1/4” female tread.

Installed, there is very little room above it...maybe 1”.
I have a couple of Oatey valves but adding an adapter to get to this 1-1/4” female thread will make it too tall.

[timurray2000]

Sorry, gotta add to this thread with these photos of the kitchen. There is no way to remove this valve without either removing the sink or cutting the pipe. Thank you Grand Design.
Attachment 28235