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3000 SERIES PUMPS
Flygt N-technology pump series for water and wastewater
HIGH EFFICIENCY WITH CLOG-FREE PERFORMANCE
60Hz
No clogging. No wasted energy. Just trouble-free pumping
Our Flygt N-pumps (2.2hp - 870hp) are designed to handle the world’s toughest water and wastewater applications. And with our Adaptive N® technology in all smaller pumps, you get a superior way to avoid clogging, reduce unplanned maintenance and cut your energy bills. That adds up to total peace of mind - and big savings over the long term.
Our vast fluid handling knowledge and dedication to research and development leads to technological advances and continuous improvement. That's why Flygt N-pumps are currently at work in millions of installations worldwide. Quite simply, they have proven to be the best and most reliable choice for both dry and submersible installations.
Sustained high efficiency saves money
When solid objects, such as stringy fibers and modern waste, enter the inlet of a conventional pump, they tendto get caught on the leading edges of the impeller vanes. This build-up reduces the impeller's efficiency, resulting in increased power consumption (Fig. A).
Avoiding unplanned service calls
With conventional wastewater pumps, a continued build-up of solids inside the 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 reduced since the solids build-up needs to be removed by backflushing when the pump is shut off at the end of the operating cycle (Fig. B). Not until the next cycle begins is efficiency restored to its initial value when the impeller is free from solid objects.
Flygt N-technology has a mechanically self-cleaning design that handles the toughest modern wastewater challenges. With sustained high efficiency it minimizes running hours and energy cost over time (Fig. C).
Experience the power of N
Whether you are working with wastewater, stormwater or another application, you will find a broad range of N-pumps designed to take on the toughest challenges and get the job done. Robust, reliable and self-cleaning, they cut your energy bills and virtually eliminate unplanned maintenance.
Broad capacity
Rating from 2.2hp to 870hp
Discharge up to 20"
Flow up to 26,600 USgpm
Heads up to 350ft
Submersible and dry installations
Every Flygt pump is performance tested in the factory
Can handle dry solids up to 8%
N-pump application areas
Wastewater
Stormwater
Desalination
Reuse
Sewage
Treatment Plant
Key benefits
State-of-the art pumping with Adaptive N technology
Sustained high-efficiency operation
Modular design with high adaptation grade
Lowers energy and unplanned maintenance costs
Reduces total lifecycle cost of the installation
Advanced technology guides the design of every component
From the motor and seals to the shaft and impellers, every component in a Flygt N-pump is 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 the Adaptive N hydraulic system, which is available only with lower-capacity pumps.
The fundamental N-technology, which was pioneered by Flygt, has been incorporated into our pumps for years. A more recent innovation is our Adaptive N impeller and Adaptive N hydraulic technologies which combine a unique geometry, dual-blade impeller and other patented features to give you sustained high efficiency and smooth operations.
When larger objects enter the pump, the impeller lifts up due to the forces from these solid obects passing through. This self-cleaning design results in up to 25% lower energy consumption, regardless of impeller speed or duty point. It also minimizes vibrations, resulting in a longer life span for the mechanical components.
Adaptive N - lifts up for large objects
When larger objects enter the pump, the impeller lifts up due to the forces from these solid objects passing through. This avoids clogging and ensures continuous, energy-efficient pumping.
Choice of impeller materials
With our Adaptive N impeller, you can also choose the optimal material type for your needs: Hard-Iron or stainless steel. Flygt’s Hard-Iron alloy is developed specifically for tough wastewater applications. Accelerated wear tests prove that Hard-Iron (60 HRC) hydraulic components prolong the lifetime by a factor of five, compared to standard grey iron material.
Low-capacity pumps
This series of Flygt N-pumps includes models capable of handling capacities up to 1500 USgpm. Like all Flygt N-pumps, they help reduce the total lifecycle costs of your installation.
1. Better heat transfer
Our specially designed and manufactured motor provides enhanced cooling because heat losses are concentrated around the stator. Trickle impregnated (not applicable for 3069) in resin (Class H insulation), the stator windings are rated at 180°C (355°F) and enable up to 30 starts per hour.
2. Cable entry
Water-resistant cable entry provides both sealing and strain relief functions to ensure a safe installation.
3. Sensors
Thermal sensors embedded in the stator windings prevent overheating. Optional leakage sensors in the stator and oil housings are also available.
4. Long-life bearings
Durable bearings provide a minimum service life of 50,000 hours.
5. Enduring seals
The Griploc system consists of two sets of mechanical shaft seals that operate independently to provide double security against leakage.
Compliance
Each pump is tested and approved in accordance with national and international standards, including 60034-1 and CSA. Pumps are available in explosion-proof versions for use in hazardous environments, and are approved by the Factory Mutual, European Standard and IEC.
Power ratings and size
| Model | 3069 | 3085 | 3102 | 3127 |
| Rating, hp | 2-3.8 | 2.2-4 | 5-6 | 7.5-11 |
| Discharge, in | 2" (50 mm) | 3" (80 mm) | 3" (80 mm) | 3" (80 mm) |
| 2.5" (65 mm) | 4" (100 mm) | 4" (100 mm) | ||
| 3" (80 mm) | 6" (150 mm) | 6" (150 mm) |
Medium-capacity pumps
For demanding pumping duties, medium-capacity models handle fluid transport for capacities up to 8000 USgpm. Robust and highly efficient, they provide clog-free performance to achieve the lowest overall lifecycle costs.
1. 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 ratedat 180°C (355°F) and enable up to 30 starts perhour.
2. Efficient cooling
These pumps are cooled either by the surrounding liquid or liquid/air; in more demanding applications, with an internal closed-loop cooling system.
3. Inspection chamber
To increase operational reliability, an inspection chamber between the seal unit and the bearings enables rapid spot checks and maintenance. In the case of a seal failure, a built-in sensor provides an early warning of any fluid build-up, thus reducing the risk of expensive repair work.
4. Cable entry
Water-resistant cable entry provides both sealing and strain relief functions to ensure a safe installation.
5. Sensors
Thermal sensors embedded in the stator windings prevent overheating, and a leakage sensor in the inspection chamber minimizes the risk of bearing and stator failure.
6. Long-life bearings
Durable bearings provide a minimum service life of 50,000 hours.
7. Enduring seals
The Flygt Plug-in seal with the Active Seal system offers increased sealing reliability and zero leakage into the motor, thereby reducing the risk of bearing and stator failure.
Compliance
Each pump is tested and approved in accordance with national and international standards, including 60034-1 and CSA. Pumps are available in explosion-proof versions for use in hazardous environments, and are approved by the Factory Mutual, European Standard and IEC.
Power ratings and size
| Model | 3153 | 3171 | 3202 | 3301 | 3315 |
| Rating, hp | 12-23 | 25-35 | 35-75 | 60-105 | 85-160 |
| Discharge, in | 3" (80 mm) | 4" (100 mm) | 4" (100 mm) | 6" (150 mm) | 6" (150 mm) |
| 4" (100 mm) | 6" (150 mm) | 6" (150 mm) | 10" (250 mm) | 10" (250 mm) | |
| 6" (150 mm) | 10" (250 mm) | 8" (200 mm) | 12" (300 mm) | 12" (300 mm) | |
| 8" (200 mm) | 14" (350 mm) | 14" (350 mm) | |||
| 10" (250 mm) |
High-capacity pumps
When 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 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 15 starts per hour.
2. Efficient cooling
These pumps are cooled by the surrounding liquid or if equipped with a cooling jacket, by the pumped liquid or by glycol and water in a closed-loop cooling system.
3. Cable entry
Water-resistant cable entry provides both sealing and strain relief functions for a safe installation.
4. Sensors
Thermal sensors in the stator windings prevent overheating, and an analog temperature sensor monitors the lower bearing. The stator housing/leakage chamber and the junction box are equipped with leakage sensors. The sensors decrease the risk of bearing and stator failure.
5. Long-life bearings
Durable bearings provide a minimum service life of 100,000 hours.
6. Enduring seals
Two sets of mechanical shaft seals work independently for double security. The Active Seal system offers increased sealing reliability and zero leakage into the motor, thereby reducing the risk of bearing or stator failure.
Compliance
Each pump is tested and approved in accordance with national and international standards, including IEC 60034-1 and CSA. Pumps are available in explosion-proof versions for use in hazardous environments, and are approved by the Factory Mutual, European Standard and IEC.
Power ratings and size
| Model | 3231 | 3306 | 3312 | 3356 | 3400 | 3531 |
| Rating, hp | 90-335 | 70-280 | 90-470 | 70-280 | 60-470 | 60-870 |
| Discharge, in | 8" (200 mm) | 12" (300 mm) | 12" (300 mm) | 14" (350 mm) | 16" (400 mm) | 20" (500 mm) |
Install it and control it just the way you want it
Regardless of the size or type of N-pump you require, we offer a wide range of modular installation concepts as well as purpose-built monitoring and control systems. Our modular installation concepts let you customize inlets and outlets to fit your needsexactly.
Take advantage of our design and engineering expertise
Are you getting the most out of your pump station designs? If you have questions regarding fluid dynamics, optimizing your sumps, water hammer calculations or even service, we can help.Flygt engineers have been researching and designing pump stations for over three decades to achieve the lowest lifecycle costs. And we have a strong service network to support you.
One of the biggest challenges in designing a pump station is to achieve a balance between efficiency and performance. Oftentimes, pump stations are over-designed, resulting in higher costs. One key focus is to secure the best possible inlet conditions while minimizing sedimentation and pump station size.
Optimizing your flow rates
Other critical factors include the number, type and arrangement of pumps, variable flow conditions in the approach area, the geometry of the structure itself and other site-specific factors. It's also vital to consider and plan for operational concerns such as pump control schemes and access for equipment service.
Finding the optimal solution
Whether you're looking for apre-engineered and packaged pump station, a standardized design or a custom design, we can help you find the best solution for your project's needs.
Computational fluid dynamics
To verify a proposed new sump design, we use computational fluid dynamics (CFD), a mathematical modeling technology. It allows us to analyze flow patterns under different operating conditions. Flygt pioneered the use of CFD to verify sump design, and we have been using it for more than 30 years.
Extensive engineering know-how
We provide a broad range of engineering services, including:
System analysis and calculations
Sump design
Water hammer calculations
Pump start analysis
Transient analysis
Computational fluid dynamics (CFD)
Scale model testing
Complete pre-engineered solutions for all your needs
Even better together
Do you need a swift station rollout in a municipal or commercial area? You’ll be happy to know that we offer a wide range of pre-engineered packaged pump stations that make the job easier and more cost-efficient. Ideally suited for our premium N-pumps, Flygt packaged pump stations come with piping and valve systems, all installation accessories and monitoring and control equipment.
Trouble-free pumping in a package
Available in a range of designs, sizes and materials, our packaged pump stations feature a common self-cleaning design, optimized for trouble-free and efficient pumping. One of the more popular versions is the Flygt TOP design pictured here.
Support for your Flygt pumps
Local service support
Our global network of local service centers and service partners provides integrated services to support safe, efficient and reliable operation. Count on us for a quick, professional response and quality maintenance services, using genuine Flygt spare parts.
Genuine Flygt spare parts and warranty
When downtime isn’t an option, rely on our global service network to deliver genuine Flygt spare parts – quickly and efficiently. All Flygt spare parts are backed bya 15-year availability guarantee. With our higher-capacity pumps, we provide a 20-year availability guarantee.
The power to adapt
Options table
Customize your Flygt N-pump with optional equipment.
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