... Weight:78~1068KG,380V/440V,50Hz/60Hz CBZ series marine explosion-proof axial fans 1. PrefaceMarine Axial fan ... 380V/440V,50Hz/60Hz,CBZ series explosion-proof axial flow fans for marine use are designed and manufactured ... air supply or extracition.Theses explosion-proof fan series are best suited to pumping out gas ... ,440V type YB-H (explosion-insular) for marine use may be mounted on these fans. 3 ...