In-line automatic self-cleaning water filters for installation into a pressurized pipe or pipeline; in-line self-cleaning water filtration units for installation into a pressurized pipe or pipeline for commercial, irrigation and industrial use; inline water filtration apparatus for installation into a pressurized pipe or pipeline for industrial, irrigation, municipal, or mining purposes; in-line water filtration installations for water purification in a pressurized pipe or pipeline; in-line w...