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The Flygt N-technology pumpseries for water and wastewaterHIGH EFFICIENCY WITH CLOG-FREE PERFORMANCE

No clogging. No wasted energy.Just trouble-free pumpingOur Flygt N-pumps (1.3 kW – 680 kW) are designed to handle the world’s toughest waterand wastewater applications. And now, with our Adaptive N technology in all smallerpumps, you get a superior way to avoid clogging, reduce unplanned maintenance and cutyour energy bills. That adds up to total peace of mind – and big savings over the long term.Our vast fluid handling knowledgeand dedication to research anddevelopment leads to technologicaladvances and continuous improvement. That’s why Flygt N-pumpsare currently at work in millions ofinstallations worldwide. Quite simply,they have proven to be the best andmost reliable choice for both dry andsubmersible installations.Sustained high efficiencysaves moneyWhen solid objects, such as stringyfibers and modern waste, enter theinlet of a conventional pump, theytend to get caught on the leadingedges of the impeller vanes. Thisbuild-up reduces the impeller’sefficiency, resulting in increasedpower consumption (Fig. A).Avoiding unplannedservice callsWith conventional wastewater pumps,a continued build-up of solids insidethe impeller can trip the panel overload or motor protection function,causing clogging and leading to costly unplanned service calls (Fig. A).Even if the pump is running intermittently, hydraulic efficiency is reducedsince the solids build-up needs to beremoved by backflushing when thepump is shut off at the end of theoperating cycle (Fig. B). Not untilthe next cycle begins is efficiencyrestored to its initial value when theimpeller is free from solid objects.The Flygt N-technology has a mechanically self-cleaning design thathandles the toughest modern wastewater challenges. With sustained highefficiency it minimizes running hoursand energy cost over time (Fig. C).Experience the power of NWhether you are working with wastewater, stormwater or another application, you will find a broad range ofN-pumps designed to take on thetoughest challenges and get the jobdone. Robust, reliable and self-cleaning, they cut your energy bills and virtually eliminate unplanned maintenance.Sustained high efficiency with Flygt N-pumpsEnergy consumptionHydraulic efficiencyA. Conventionalwastewater pumpB. Conventional pumprunning intermittentlyC. Flygt N-pump

Broad capacityN-pump application areasKey benefits Ratings from 1.3 kW to 680 kW Discharge up to 800 mm Flow up to 1,000 l/s Heads up to 100 m Submersible and dry installations Every Flygt pump is performancetested in the factory Can handle dry solids up to 8% Wastewater Stormwater Desalination Reuse Sewage Treatment Plant State-of-the art pumping withAdaptive N technology Sustained high-efficiency operation Modular design with highadaptation grade Lowers energy and unplannedmaintenance costs Reduces total lifecycle cost ofthe installation

Advanced technology guidesthe design of every componentFrom the motor and seals to the shaft and impellers, every component in a Flygt N-pumpis designed, engineered and manufactured to optimize operation and prolong service life.Advanced technology guides the design of all aspects of the pump. One example is theAdaptive N hydraulic system, which is available only with lower-capacity pumps.The fundamental N-technology,which was pioneered by Flygt, hasbeen incorporated into our pumpsfor years. A more recent innovationis our Adaptive N impeller andAdaptive N hydraulic technologies(see below) which combine a uniquegeometry, dual-blade impeller andother patented features to give yousustained high efficiency and smoothoperations. When larger objectsenter the pump, the impeller liftsup due to the forces from thesesolid obects passing through. Thisself-cleaning design results in upto 25% lower energy consumption,regardless of impeller speed or dutypoint. It also minimizes vibrations,resulting in a longer life span forthe mechanical components.1. Backswept leading edges –ensures no stickingWhen solids enter the pump, they aremet by the N impeller. The optimizedblade geometry, with its backsweptleading edges, ensures that nomaterial sticks to the impeller.2. Integrated guide pin –clears the centerA guide pin inserted into the insertring clears the center of the impellerby pushing solids along the leadingedges towards the periphery of theimpeller for removal.3. Relief groove –facilitates transportWhen solids reach the perimeter ofthe inlet, they are transported insidethe relief groove, guided along theedge of the impeller vane, throughthe volute and out of the pump.

Adaptive N – lifts up for large objectsWhen larger objects enter the pump,the impeller lifts up due to the forcesfrom these solid objects passingthrough. This avoids clogging andassures continuous, energy-efficientpumping.Choice of impeller materialsWith our Adaptive N impeller, youcan also choose the optimal materialtype for your needs: Hard-Iron ,grey iron or stainless steel. Flygt’spatented Hard-Iron alloy is developed specifically for tough wastewater applications. Accelerated weartests prove that Hard-Iron (60 HRC)hydraulic components prolong thelifetime by a factor of five, comparedto standard grey iron material.Extra-durableoption forabrasiveand erosioncorrosionapplications.Chopper ringfor cuttinglong fibers orsolids.Adaptive N hydraulic materials - accelerated wear testGrey ironWearStainless steelHard-Iron After 200 hours, the HardIron impeller proved tobe five times more wearresistant than the grey ironversion. The stainless steelimpeller showed wearcomparable to the standardgrey iron material.020406080100Time (hrs)120140160180

Low-capacity pumpsThis series of Flygt N-pumps includes models capable of handling capacities up to 100 l/s.Like all Flygt N-pumps, they help reduce the total life-cycle costs of your installation.1. Better heat transferOur specially designed and manufactured motor provides enhancedcooling because heat losses areconcentrated around the stator.Trickle impregnated (not applicablefor 3069) in resin (Class H insulation),the stator windings are rated at180 C (355 F) and enable up to 30starts per hour.2. Cable entryWater-resistant cable entry providesboth sealing and strain relief functionsto ensure a safe installation.3. SensorsThermal sensors embedded in thestator windings prevent overheating.Optional leakage sensors in the statorand oil housings are also available.4. Long-life bearingsDurable bearings provide a minimumservice life of 50,000 hours.ComplianceEach pump is tested and approvedin accordance with national andinternational standards, including60034-1 and CSA. Pumps are available in explosion-proof versions foruse in hazardous environments, andare approved by the Factory Mutual,European Standard and IEC.5. Enduring sealsThe Griploc system consists of twosets of mechanical shaft seals thatoperate independently to providedouble security against leakage.POWER RATINGS AND SIZEModel3069308531023127Power rating - kW1.5–2.41.3–2.43.1–4.54.7–8.5Discharge size - mm50808080Performance, 50 Hz1003127[H/m]306910030850310210[Q l/s]1006510010080150150

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Medium-capacity pumpsFor demanding pumping duties, medium-capacity models handle fluid transportfor capacities up to 500 l/s. Robust and highly efficient, they provide clog-freeperformance to achieve the lowest overall life-cycle costs.1. Better heat transferOur specially designed and manufactured motor provides enhancedcooling because heat losses areconcentrated around the stator.Trickle impregnated in resin (Class Hinsulation), the stator windings arerated at 180 C (355 F) and enableup to 30 starts per hour.2. Efficient coolingThese pumps are cooled either bythe surrounding liquid or liquid/air,in more demanding applications,with an internal closed-loop coolingsystem.3. Inspection chamberTo increase operational reliability, aninspection chamber between the sealunit and the bearings enables rapidspot checks and maintenance. In thecase of a seal failure, a built-in sensorprovides an early warning of any fluidbuild-up, thus reducing the risk ofexpensive repair work.4. Cable entryWater-resistant cable entry providesboth sealing and strain relief functions to ensure a safe installation.5. SensorsThermal sensors embedded in thestator windings prevent overheating,and a leakage sensor in the inspection chamber minimizes the risk forbearing and stator failure.6. Long-life bearingsDurable bearings provide a minimumservice life of 50,000 hours.7. Enduring sealsThe Flygt Plug-in seal with theActive Seal system offers increasedsealing reliability and zero leakageinto the motor, thereby reducing therisk of bearing and stator failure.ComplianceEach pump is tested and approvedin accordance with national andinternational standards, including60034-1 and CSA. Pumps are available in explosion-proof versions foruse in hazardous environments, andare approved by the Factory Mutual,European Standard and IEC.POWER RATINGS AND SIZEModel31533171320233013315Power rating - kW7.5–1515–2222–4737–7048–105Discharge size - 50350200250Performance, 50 Q l/s]200500

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High-capacity pumpsWhen higher capacity is required, the Flygt N-pump series has pumps to do the job.These models deliver unprecedented pumping power – reliably and efficiently.1. Better heat transferOur specially designed and manufactured motor provides enhancedcooling because heat losses areconcentrated around the stator.Trickle impregnated in resin (Class Hinsulation), the stator windings arerated at 180 C (355 F) and enableup to 15 starts per hour.3. Cable entryWater-resistant cable entry providesboth sealing and strain relieffunctions for a safe installation.4. SensorsThermal sensors in the stator windings prevent overheating, and ananalog temperature sensor monitorsthe lower bearing. The stator housing/leakage chamber and the junctionbox are equipped with leakagesensors. The sensors decrease therisk of bearing and stator failure.2. Efficient coolingThese pumps are cooled either bythe pumped liquid or liquid/air withan internal closed-loop coolingsystem.5. Long-life bearingsDurable bearings provide a minimumservice life of 100,000 hours.6. Enduring sealsTwo sets of mechanical shaft sealswork independently for doublesecurity. The Active Seal systemoffers increased sealing reliabilityand zero leakage into the motor,thereby reducing the risk of bearingor stator failure.ComplianceEach pump is tested and approvedin accordance with national andinternational standards, includingIEC 60034-1 and CSA. Pumps areavailable in explosion-proof versionsfor use in hazardous environments,and are approved by the FactoryMutual, European Standard and IEC.POWER RATINGS AND SIZEModel3231330633123356340035313800Power rating - 225–550Discharge size - mm200300300350400500800Performance, 50 Hz100,00N3231N3531Head (m)N3312N3306N335610,001,00N340020,00200,00Flow /l/s)N38002000,00

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