Vacuum Breaker Replacement

I have an outside faucet that has a vacuum breaker on it. The vacuum breaker has faulted and needs to be replaced. The threads that attach to the faucet are not standard. They look to be 1 inch and finer then pipe threads. I have been to every plumbing supply store in the area without success. The only marking on the faucet is “T-J”. The breaker has “TANNER MFG. ERIE PA. N0. 928000 – ASSE 1011”. The house was built in 1988 in Minnesota. Any idea how I can get a replacement for this?…

Vacuum Breaker Replacement