... and single suction chemical centrifugal pump, made of fluorion plastic PVDF alloy,designed according to international standar ISO2858 and ... , such as petroleum, chemical, pharmacy, metallurgy, electric power, electroplate, pesticide, paper making,etc.Nowadays, it is one of the ... iron outside with PVDF Lining inside*.Impeller:press fluorin plastic PVDF with metal embed*.Shaft-seal:out-installed type ...