Return Line Filters - Type RTF1025STAUFF RTF1025 Return Line Filters are designed as tank top filters with a maximum operating pressure of 3, 4 bar 49 PSI. Return Line Filters - Type RTF20STAUFF RTF20 Return Line Filters are designed as tank top filters with a maximum operating pressure of 10 bar 145 PSI and flow rates up to 115 lmin 30 US GPM. The filter bowl is designed to return the oil beneath the surface thus preventing entrainment of air. RTF20 series compact design and integral breather make them ideal for mobile hydraulic applications. Return Line Filters - Type RTF40STAUFF RTF40 Return Line Filters are designed as tank top filters with a maximum operating pressure of 6, 9 bar 100 PSI. The filter bowl is designed to return the oil beneath the surface thus preventing entrainment of air. The Filter Elements RTE-48 interchange with the popular K series and Filter Elements RTE-49 interchange with theRE-409 series elements. Return Line Filters - Type RTF50STAUFF RTF50 Return Line Filters are designed for tank top applications with a maximum pressure of 6, 9 bar 100 PSI. The fi lter bowl is designed to return the oil beneath the surface thus preventing entrainment of air. The Filter Elements RTE-58 interchange with the popular K series and Filter Elements RTE-59 interchange with theRE-409 series elements. Technical DataConstructionTank top flange mounting Operating PressureRTF1025: max. 3, 4 bar 49 PSIRTF20: max. 10 bar 145 PSIRTF40: max. 6, 9 bar 100 PSIRTF50: max. 6, 9 bar 100 PSI Flow RatingRTF1025: max. 95 lmin 25 US GPMRTF20: max. 115 lmin 30 US GPMRTF40: max. 379 lmin 100 US GPMRTF50: max. 379 lmin 100 US GPM ConnectionsOption of BSP or NPT, others on request MaterialsFilter head: AluminiumFilter bowl: Polyamide or Steel Media CompatibilityMineral oils , other fluids on request Options and AccessoriesValves (available as an option)Bypass valve (integrated in the element) Clogging Indicator (available as an option)Visual or visual-electrical clogging indicator Integrated Air Filter Element - Type RTEAOnly by RTF20 Weld RingFor Return Line Filters RTF40 and RTF50