Well if it has become damaged then it will bypass. I'm not a fan of that style although they work for some people. Mine bypassed right from the getgo because of the system pressure so I got rid of it. The only ASOV that worked for me was the Kent R/O shutoff kit but I remember it being really expensive. Right now I just have manual valves on everything to shut the system down but that's likely inconvenient for your setup.
Kent Marine Ā» R/O Shut Off Kit | Products
Anyway, this is all assuming that your drain is because of unstopped pressure. Is there possibly a system leak that would let the water empty out of the housing just by gravity? I assume there would be water dripping somewhere while operating under pressure if so.