Flygt N-pump series
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Flygt N-pump series Self-cleaning pumps with sustained high efficiency

Introduction Sustained high efficiency is priceless The N-pump advantage • Patented technology • Innovative design • Sustained high efficiency • Self cleaning ability • Modular design • Reliable • Fewer unplanned service calls Flygt N-pumps take on the toughest applications and get the job done. Every component is designed and manufactured to deliver sustained high efficiency. Thanks to patented N-technology with its innovative self-cleaning impeller, Flygt N-pumps deliver the highest total efficiency. It lowers your energy bill and reduces unplanned maintenance costs. That adds up to total...

Design Self-cleaning N-pump saves money Sustained high efficiency When solid object such as stringy fibrous material and modern trash, enter the inlet of a conventional pump, they tend to get caught on the leading edges of the impeller vanes. This build-up reduced the impeller’s efficiency, resulting in increased power consumption (Fig. A). This increased rate of power consumption generates an increase in energy charges. Impeller Insert ring Guide pin Relief groove As solids continue to build-up inside the impeller, motor thermal protection can trip causing the pump to stop. This leads to...

DESIGN Broad capacity range to suit your application Flexible and modular design Flygt N-technology enables you to tailor the hydraulics to meet the requirements of virtually any application. Choose the hardened cast iron version for typical wastewater applications and the chopper ring version for cutting long fibres or solids. The Hard-Iron™ version should be used in abrasive applications and waters that cold cause erosion corrosion due to high oxygen content. Cast iron Cast iron impeller with hardened edges and insert ring for typical pumping appli­ cations. Whatever you choose, you never...

longer life Xylem specially designs and manufactures Flygt N-pump components, such as the motor, seals and shaft, to optimize operation and prolong pump ser- vice life. The Class H squirrel-cage induction motor delivers outstanding performance and superior heat trans- fer in submersible and dry installations. Heat losses are concentrated around the shrink-fitted stator, which is cooled by means of the surrounding water. The motor has a NEMA Class B maximum operat- ing temperature rise of 80°C (176°F) to ensure long service life. Prepared for variable speed operation, all motors are capable...

This series of Flygt N-pumps includes three models Performance, 50 Hz Power ratings and sizes with twin guide bars on A semi-permanent free A vertically-mounted, A horizontally-mounted, A semi-permanent standing installation. Transportable version with pipe or hose in-line installation with in-line installation with within a vertical stee

BETTER HEAT TRANSFER Our specially designed and manufactured motor provides enhanced cooling because heat losses are concentrated around the stator. Trickle impregnated in resin (Class H insulation), the stator windings are rated at Each pump is tested and approved in ac- cordance with national and international Pumps are available in explosion-proof versions for use in hazardous environ- ments, and are approved by the Factory Mutual, European Standard and IEC. CABLE ENTRY Water-resistant cable entry pro- vides both sealing and strain relief functions to ensure a safe Thermal sensors...

3153, 3171, 3202, 3301 and 3315 Medium capacity pumps For demanding pumping duties, five models handle fluid transport for capacities up to 500 l/s. Highly efficient, these heavy-duty models provide clogfree performance in order to achieve the best overall life cycle cost. Performance, 50 Hz 100 3301 50 3202 [H/m] 20 3153 3315 3171 10 5 2 0 0 10 20 50 100 200 500 [Q l/s] Power ratings and sizes Model Rating, kW Discharge, mm (in) 3153 7.5–15 80 (3") 100 (4") 150 (6") 200 (8") 250 (10") 3171 15–22 100 (4") 150 (6") 250 (10") 3202 22–47 100 (4") 150 (6") 200 (8") 300 (12") 3301 37–70 150 (6")...

BETTER HEAT TRANSFER Our specially designed and manufactured motor provides enhanced cooling because heat losses are concentrated around the stator. Trickle impregnated in resin (Class H insulation), the stator windings are rated at 180°C (355°F) and enable up to 30 starts EFFICIENT COOLING These pumps are cooled either by the surrounding iquid or, in more demanding applications, with an internal closed-loop cooling system. INSPECTION CHAMBER To increase operational reliability, an inspection chamber between the seal unit and the bearings enables rapid spot checks and maintenance. In the...

Large capacity pumps When higher capacity is required, the Flygt N-pump Performance, 50 Hz Power ratings and sizes For semi-permanent wet well A semi-permanent free A vertically-mounted, per- A horizontally-mounted, installations. The pump is standing installation. manent dry well or in-line permanent dry well or in-line installed with twin guide bars Transportable version with installation with flange con- installation with flange con- on a discharge connection, pipe or hose connection. nections for suction and dis- nections for suction and dis- charge pipework. charge pipework.

BETTER HEAT TRANSFER Our specially designed and manu- factured motor provides enhanced cooling because heat losses are con- centrated around the stator. Trickle im- pregnated in resin (Class H insulation), the stator windings are rated at 1 80°C Each pump is tested and approved in accordance with national and in- ternational standards, including IEC approved by the Factory Mutual, CABLE ENTRY Water-resistant cable entry pro- vides both sealing and strain relief functions for a safe installation. Thermal sensors in the stator wind- ings prevent overheating, and an analogue temperature sensor...

Technical data Complete solutions for your needs Ready-to-install prefabricated pump stations Flygt N-pumps can be delivered ready to install in standard, prefabricated pump stations with everything you need. Our prefabricated pump stations feature the most reliable and cost-effective pumping solutions. Our solutions are pre-assembled with your configuration of valves, discharge pipe, and inlet and outlet connections. Installation and startup is easy and requires minimal time. Monitoring and control: Empower your business Flygt MiniCAS is a supervision relay for stator temperature and...