I found this site on Vigo Pasteurisers, they're not that expensive if shared between a few members or could be easily enough hacked.
http://www.vigopresses.co.uk/Catalogue/Pasteurisers
Plus a link on pasteurising cider
http://www.vigopresses.co.uk/AdditionalDepartments/Header-Content/Make-cider/Pasteurising-sweetened-cider/How-to-pasteurise-sweetened-cider