aquaoren
Contributor
These are only the 2 North American standards for neck threads. Don't forget the European M25x2 neck threads.Spectre:There are two different 'standard' tank orifices. 0.750-14 NPS, or "3/4" and 0.875-16 UNF, or "7/8". Aluminum tanks are 3/4, as are low and the new 'mid' pressure E8 series steel tanks. High pressure [3500 psi] steel tanks are mostly 7/8.
So a manifold for your aluminum would work on a 3/4 threaded steel tank. If you go that route, you probably will want to get a 300 BAR manifold as opposed to a 200 BAR manifold.
One thing to note since I'm on the topic. The "3/4" and "7/8" is referring to the .750 and .875 in the thread naming. It does 'not' imply 3/4" and 7/8"; in fact, the 7/8 is a smaller opening then the 3/4. So if all you remember is "3500 psi tanks have a smaller opening", you'll end up buying the wrong manifold.
The tanks in Brunei don't have to have North American standards.