飞力N-3085型水泵的叶轮可以灵活移动以改善流量，同时消除不利状况下的堵塞。当碎屑进入蜗壳，依靠液压专利将这些碎屑由中心疏散到输入口的周边。轴向运动可以允许大一些的碎石顺畅通过。该叶轮的对开设计，便于自身清洁。
ITT公司声称新叶轮显著的意义在于，大大提升了飞力N系列泵浦的防堵能力。ITT给水排水研发主任UlfArbeus认为：“这将是ITT的N系列污水泵实现跨越式发展的一步。”
Anti-clogtechnologyforimpellers
ITThasintroducedanti-clogimpellertechnologyforitssmallN-seriesofwastewaterpumps.
TheFlygtN-3085impellermovesaxiallytoimproveflowandhelp
eliminatingcloggingunderdifficultofconditions.When
detritusentersthevolute,thepatentedN-hydraulicpushesthemfromthe
centretotheperimeteroftheinlet.Moving axiallyalsoenablesvery
largedetritustogetthrough.Theimpellerdesigniscoupledtoaspecially
developedrelief grooveandisself-cleaning.
ITTsaysthatthenewimpellersignificantlyimprovestheanti-clog
characteristicsofthecompany’sFlygtNseriesof pumps."Thisisa
giantstepinthedevelopmentofourN-rangeforwastewaterpumping,"
saysUlfArbeus,R
