Yup, you found more.
As I read them (sometimes I am semi-literate), the first one is just plugs.
Parker shows an adaptor but does not indicate the metric thread is a tapered thread.
I live near the NYC retail/distributor for Parker/Weatherhead.
Metric fittings, regardless of if they are in the catalog or not, are not available.
I can't find someone to buy them from to try anything. Everything is a BFD with this thing.
Taping to NPT looks like the simplest fitting by far. Even if I just want to plug the drain back up, I can plug it with a 3/4NPT.
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