Here is the Answere to what a still must "meet up to" inside EU to be legally......
http://ec.europa.eu/enterprise/sectors/mechanical/files/atex/guide/atex-guidelines_en.pdf
http://ec.europa.eu/enterprise/sectors/pressure-and-gas/files/ped/ped-guidelines_en.pdf
Inside EU we all legally manufactures must meet the ATEX/EX Direktive/demands/ Law so all electric componets on the still and inside the ATEX/EX zone type Electric heaters, electric water valve, electric controllpanel on still, safety valve below 0,5bar or the boiler must be CE tested and aproved and more must be ATEX/EX classified....
All electric parts "on the bolier" and inside the ATEX/EX zone, around the boiler must be ATEX/EX classified and the boiler must have a approved ( ATEX/EX) safetyvalve that are below 0,5 bar ore the boiler is classified as a Pressure boiler........
Sorry but my English issnt better...
Hope a have ansewere yours question of what the legally demands is inside EU....
Cheers from Sweden