... 3.5-200um rating UF Automatic Self-cleaning Filter | Ballast Water Filter Super High Filtration RatingsUnique sealed backwash technologyUF Series ... in petrochemical industry, viscose rayon, raw water, process water, cooling circulating water, spraying water, sewage, squirt water, other solvents, acid and alkali liquid ... product information.UF UF Automatic Self-cleaning Filter | Ballast Water Filter