Duotek: Zone 2 certified, EX II 3/3 GD c IIB T135°C standard version, assembled with central part in PP, fluid body in PP, PVDF, ALUMINIUM and SS AISI 316
Duotek ATEX, Duotek FOOD ATEX DAMPER ATEX: Zone 1 certified, EX II 2/2 GD c IIB T135°C ATEX version, assemble with central part in PP+CF (conductive), fluid body in PP+CF (conductive), PVDF+CF(conductive), ALUMINIUM and SS AISI 316