Vacuflush vacuum break removal

In trying to remove a leaking hose between the foot valve and the vacuum break I managed to break the break. It snapped off at the threaded part that goes into the top of the bowl. I'm wanting to remove the part that goes into the bowl and not have to remove the bowl so my visual on the part that is left is poor. I've removed the nylon lock nut and have tried to remove the remaining piece with no luck. I'm not sure what holds the remaining piece in and don't want to force it as I have had bad luck in applying force to porcelain bowls. The parts diagram doesn't really show what might be holding it in. In looking with a mirror, it appears that there might be an o-ring involved (not shown on diagram). Any experience out there?

Thanks, Tator

Call these folks. They will be able to help you parts and suggestions.

https://marinesan.com/