angel air threads

[misfit]

anybody know what the threads on the output of an angel air is? is it standard npt or is it something metric? also with the reg i got a black fill nipple which does not appear to be ntp. does anybody know what that is? been routing through my stuff trying to get everything together

[AGDlover]

imput nipples are metric and do require a special fill nipple. As far as I know outputs should be standard fittings