... PVDF,PP,PS,PES Dia:4",6",8",10" Casing:UPVC,SS,FRP water filter plant with Ultra filtration membrane water filtering filter for water ... treatment with different membrane material (PES,PS,PVDF,PVC,PAN,PP)Hollow ... -180daysChemicals Flushing Time15-120minsChemicalsCitric acid,NaOH / NaClO,H2O2 UF water filter plant