Hi, I have a Zurn Z6000 Aquaflush and it only leaks as the flush is
ending and it stops leaking after the flush is completed. This page
shows the Aquaflush: http://www.zurn.com/operations/aquaf.../downloads.asp.

Should I replace the vacuum breaker valve?

Do I disassemble by first unscrewing the spud coupling, followed by
the coupling at the vacuum breaker? I assume I dont need to unscrew
the tailpipe coupling, right?

Thanks for any tips!