Jakarta barely qualifies as Southern Hemisphere. He'll need to send it somewhere further south for serious testing.... Somewhere like Hobart, Tasmania for instance.. hint hint.
It's a DSV / BOV - what are you going to 'test'? Air goes around and around?
I'm not a big fan of the APOC BOV, simply because it hurts so much when I hit myself in the back of the head with it.
Not sure how you'd attach one to your revo either - the hose diameter is quite different. But your welcome to try anytime you're in Melbourne - or even the whole unit if you like.
Mike