Which Flogas? The standard steel propane, or tge Flogas grp gaslight bottles? Flogas will not exch the Calor bottles for any of theirs due to the Calor ā rentalā agreement and of course Flogas donāt have the equivalent of Calorlite. But for standard steel bottles the pigtail fittings are the same for Calor or Flogas. For gaslight you would need an adaptor to use bulkhead regulator as they use a clip on regulator.
See JTQ post on this topic.
By JTQ
This answer IMO could be misleading; the answer is in modern UK NCC approved caravans the Gaslights do use the same wretched bulkhead mounted regulator as would be the case with Calor or any other gas bottle.
The difference is not in the regulator, but the "pigtail" hose from the bottle to the regulator; the bottle fitting is different, it is a 27 mm "Clip-on", however, whilst you could change the pigtail you could simply change to a different adaptor on a universal pigtail hose. These adaptors are readily available, and can also suit the French Le Cube if that is ever needed. For that additional flexibility buy the 27 mm clip-on with a top take off rather than side take off. [I can go into specifics on these if requested to]
If a continental van like mine where the regulator is bottle mounted then I suspect just like mine the same 27 mm clip-on adaptor fits directly onto the regulator, as does the UK propane handwheel adaptor, if using Calor.
I have in 16 years not struggled to get Gaslight exchanges, these days it is via home delivery.
Nor have I had any issue with the Clip-on feature, or for that matter the soft nosed Calor hand wheel connection, but did with the solid ones years before.