Hi Bill, Are you really on Wrangel Island in the Bering Sea? Or Wrangell one of our favorites in AK?
In any case thanks for your reply. And yes, Y valves are problematic. I have found some for Pools and Spas which look to be quite heavy duty but they are big and require modifications to the plumbing
in general to make them work.
I am tempted at times to rip all the waste water plumbing
out and start over with rigid ABS pipe but then the call of the wild gets me and we move on to more pleasant subjects.
Cheers and enjoy wherever you are.