IBC Tote S60x6 Fittings

I bought a used 275 gallon IBC Tote to use for emergency water storage. It came with a butterfly valve with S60-6 metric threads and the collar to a cap with no center. I created complete adapters that can be screwed onto the valve and I created inserts that can be used with the cap collar.
There is a space for an O-ring for the inside of each adapter/insert. I used a 2" OD o-ring from a Harbor Freight kit.
There is a complete adapter with 3/4" HOSE BIB threads.
There is a complete adapter