These Scathing Critiques Prove Not Everyone Loves The Office 1009845B Hengst Tank Mounted Return Line Filter w Size 0040 Filter Element (R928040177, 10TEN0040 PWR6A00 V2,2 V R3 F). 1009845B Hengst Tank Mounted Return Line Filter w Size 0040 Filter Element (R928040177, 10TEN0040 PWR6A00 V2,2 V R3 F); Tank Mounted return line filters are designed for installation on fluid tanks. Their function is to separate solid materials from fluids. Features: Special highly efficient filer materials; Filtration of very fine particles and high dirt holding capacity across a broad pressure differential range High collapse resistance of filter elements; Optionally equipped with mechanical optical maintenance indicator with memory function; Different electrical switching elements available as options; As standard, Filters are equipped with a bypass valve integrated in the filter housing; Replaceable filter element; Optional measuring port