What about non-return (one-way) valves on each gas line into your manifold?In reality it cannot work unless all beers to be fermented start at the same time.
Yes an adapter is needed NPT to BSP
They are less than $12US on AmazonThese are <$50 on eBay delivered, but I assume you will still need an adaptor for the fermentasaurus?
I found it really dear toThey are less than $12US on Amazon
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