The cut-point that I use at work is 250 bar-litres. We dont register pressure vessels below this level. That may, or may not help this discussion.
Is it possible to get a design/prototype registered, and then multiple copies made and sold without further testing? If so, we have a potential manufacturer in Mario, and a potential salesman in Paul. There is probably a demand for 20+ high pressure buffer tanks.
Of course it needs to weigh significantly less than a CO2 bottle. A single size might be slightly restrictive, but no more so than the myriad RW rules to which we all conform already.
Jeremy
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