... alloy,designed according to international standar ISO2858 and combined with non-metal pump’s technology. It advanced in ... vitriol muriatic acid, nitric acid, vinegar acid, hydrofluoric acid, aqua regia, strong alkali, strong oxidant, organic impregnant, so ... lifeMaterial *.Casing: cast iron outside with PVDF Lining inside*.Impeller:press fluorin plastic PVDF with metal embed*.Shaft-seal:out-installed ...