When a pump fails on a construction site, in a sewage station, or underground in a mine, the consequences are immediate and expensive. Choosing the right pump from the start — and maintaining it correctly — is what keeps operations running. This guide covers the full Xylem Flygt range and everything you need to know to select, size, install, and maintain the right pump for your application.
Why Xylem Flygt Is the Global Standard in Submersible Pump Technology
Flygt has been manufacturing submersible pumps since 1947. That history translates into a depth of engineering knowledge that is reflected in every product — from the motor cooling design to the impeller geometry. Xylem, which owns the Flygt brand, invests heavily in R&D, and the result is a range of pumps that consistently outperform competitors on efficiency, clog resistance, and service life.
For UAE-based operations sourcing through Genavco, Flygt pumps come with local technical support, genuine spare parts availability, and the confidence that comes from working with a brand that is trusted on infrastructure projects across more than 150 countries.
Xylem Flygt Pump Range: Purpose-Built for Every Fluid Challenge
Flygt produces pumps across four main categories, each engineered for a specific set of fluid handling conditions.
Flygt Submersible Pump — Reliable Underwater Performance
Flygt submersible pumps are designed to operate fully submerged, with the motor and pump forming a single sealed unit. This eliminates the need for a dry pump room, reduces installation footprint, and allows the pump to run even when the water level fluctuates. They are used in water supply, irrigation systems, flood control, and industrial process water applications where dependable underwater operation is required day after day.
Flygt Dewatering Pump — Fast, Efficient Site Dewatering
Construction sites, excavations, tunnels, and mines all generate water that must be removed quickly and continuously. Flygt dewatering pumps are built for this — handling muddy, abrasive, or solids-laden water without blocking or excessive wear. They are compact enough to lower into a sump or trench, robust enough to operate unattended, and efficient enough to keep running costs under control even during extended dewatering campaigns.
Flygt Submersible Water Pump — Clean Water Supply & Transfer
For clean water transfer applications — water treatment plants, storage tank filling, pressure boosting, and municipal supply networks — Flygt submersible water pumps deliver high flow rates with excellent hydraulic efficiency. Their stainless steel or cast iron construction handles the demands of continuous operation, and motor protection systems prevent damage from dry running or overheating.
Flygt Sewage Pump — Handling Solids Without Clogging
Sewage and wastewater pumping is one of the most demanding pump applications. The fluid contains rags, wipes, solids, and fibrous material that blocks conventional pumps repeatedly. Flygt sewage pumps are built around the N-Technology impeller design, which actively repels stringy and fibrous material rather than drawing it into the impeller. The result is dramatically fewer blockages, lower maintenance frequency, and better energy efficiency compared to standard sewage pumps.
Dewatering Pump Applications: Construction, Mining & Infrastructure
Dewatering is required wherever groundwater, rain, or process water accumulates in a space that needs to stay dry. In construction, foundations, basements, and trenches must be kept clear throughout the project. In mining, underground workings fill with groundwater that must be continuously pumped to the surface. In infrastructure projects — road tunnels, metro systems, utility ducts — dewatering during construction and ongoing drainage during operation are both critical.
Flygt dewatering pumps are engineered for all of these environments. Submersible models can be lowered directly into flooded areas without any above-ground pipework, speeding up deployment considerably. For high-volume applications, multiple pumps can be connected in parallel to increase total flow capacity.
How to Size a Submersible Pump: Flow Rate, Head & Motor Power
Pump sizing requires three figures. The first is flow rate — how many litres per minute or cubic metres per hour need to be moved. This is determined by the volume of water to be cleared and the time available to clear it. The second is total head — the total pressure the pump must work against, including the vertical lift from the water surface to the discharge point, plus friction losses in the pipework. The third is motor power, which must be sufficient to deliver the required flow against the specified head without overloading.
Flygt pump performance curves plot flow rate against head for each model, making it straightforward to identify the right pump for a given duty point. For applications with variable conditions — fluctuating water levels or changing discharge distances — select a pump whose performance curve covers the full expected range, not just the peak duty.
Xylem Flygt N-Technology: The Self-Cleaning Impeller Advantage
Flygt's N-Technology is one of the most significant advances in submersible pump design. The impeller geometry is shaped so that any fibrous material entering the pump is deflected outward and expelled rather than wrapped around the impeller hub. A relief groove cut into the pump housing allows solids to pass through without jamming the impeller.
In practice, this means Flygt N-Technology pumps in sewage and wastewater applications require far less manual intervention to clear blockages. For a pumping station that previously needed operator callouts multiple times per week, switching to N-Technology can reduce blockage-related callouts to near zero. The energy efficiency of the N-Technology impeller is also higher than conventional designs, delivering measurable savings on electricity costs.
Pump Installation Best Practices for Long-Term Reliability
A correctly specified pump installed badly will still cause problems. For submersible pumps, the key installation requirements are: the pump must be installed at the correct depth to ensure adequate submergence at minimum water level; the discharge pipework must be correctly supported to avoid putting mechanical stress on the pump outlet; the power cable must be routed and protected to prevent damage from abrasion or flooding; and the motor thermal protection and level control systems must be correctly wired and tested before commissioning.
For dewatering applications, the pump should be positioned in the lowest point of the sump or excavation. If the water contains significant quantities of abrasive material, a gravel or filter layer around the pump inlet reduces wear on the impeller. All Flygt installations through Genavco include commissioning support to ensure the system is set up correctly from day one.
Submersible Pump Maintenance: Preventing the 5 Most Common Failures
- Seal failure — the most frequent cause of motor damage. Inspect mechanical seals at the manufacturer's recommended interval and replace before leakage occurs. Flygt's dual seal design with oil-filled intermediate chamber provides a second line of defence if the primary seal degrades.
- Impeller wear — abrasive fluids erode impeller blades over time, reducing flow and efficiency. Monitor pump performance against baseline readings; a significant drop in flow at the same head indicates wear.
- Bearing failure — caused by misalignment, overloading, or contaminated lubricant. Follow Flygt's bearing replacement intervals based on running hours.
- Cable damage — submersible pump cables are vulnerable to crushing, abrasion, and rodent damage. Inspect the full cable length at each service visit.
- Blocked impeller — despite N-Technology's resistance to clogging, extreme debris loads can still cause blockage. A sudden drop in flow with no change in power draw is the typical indicator.
Pump Monitoring & Smart Control with Xylem Digital Solutions
Xylem's digital monitoring tools allow pump performance to be tracked remotely, with alerts sent when operating parameters fall outside normal ranges. For pumping stations in remote locations or unmanned facilities, this means problems are identified before they cause failure rather than after. Data on flow rate, energy consumption, and running hours feeds into predictive maintenance schedules, reducing the cost and disruption of reactive repairs. Integration with building management systems or SCADA platforms is straightforward using standard communication protocols.
Frequently Asked Questions About Xylem Flygt Pumps
Can Flygt dewatering pumps handle concrete slurry?
Yes — Flygt dewatering pumps are designed for high-solids and abrasive fluids. For very heavy slurry, specify a model with wear-resistant impeller options.
What is the maximum submersion depth for Flygt submersible pumps?
It varies by model, but most standard Flygt submersible pumps are rated for submersion depths of 20 metres. Specialist deep-well versions are available for greater depths.
How do I know when to replace the mechanical seal?
Flygt recommends seal inspection based on running hours. The seal monitoring port on most Flygt models allows you to check for leakage without disassembling the pump.
Are Flygt pumps available for temporary hire as well as purchase?
Contact Genavco directly to discuss availability. For short-term construction dewatering, purchase often provides better value over a long project duration.
Conclusion
Xylem Flygt submersible and dewatering pumps are among the most proven products in industrial fluid handling. Whether the application is construction site dewatering, sewage transfer, clean water supply, or underground drainage, there is a Flygt pump engineered specifically for the task. Correct sizing, professional installation, and disciplined maintenance are what turn a well-chosen pump into a long-term asset.
Genavco has supplied Xylem Flygt pumps across the UAE, supporting dewatering, sewage, and water transfer projects in construction, infrastructure, and industrial sectors. Our engineers provide pump selection, on-site commissioning, and genuine parts support — ensuring every Flygt installation performs as specified from day one.
