Not a model i've heard of and google doesn't appear to know either. All i found is this... http://www.saf-fro.com/file/otherelement/pj/brochure_8pages_protig_ng_2011_en72421.pdf so maybe look for a local air Liquide dealer? The change heads bit... does it have interchangable heads or is it a regular torch and you're after a new head? If the former/it's something weird a pic might help