Flygt N-technology Sustained high efficiency is priceless. Back in 1997, Flygt N-technology revolutionized submersible wastewater pumps with sustained pump efficiency, clog-free operation and lower total cost of ownership. Suddenly, it was easy to maintain high hydraulic efficiency with a two-vane impeller, avoid efficiency loss due to partial blockages and adjust impeller clearance without disassembling the pump.
Today, Flygt N-technology has gained a solid reputation for legendary quality and reliability. The introduction of enhanced Flygt N-technology has raised the bar even higher –making technology the optimal choice for the most challenging tasks in wastewater pumping.
Sustained high efficiency saves money
When solid objects like 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 reduces the impeller’s efficiency, resulting in increased power consumption. This increased rate of power consumption generates an increase in energy charges. As solids continue to build inside the impeller, motor thermal protection can trip causing the pump to stop. This leads to costly unplanned service calls.
If a conventional wastewater pump runs intermittently, the solids build-up will be removed by backflushing when the pump is shut off at the end of the operating cycle. When the next cycle begins, efficiency returns to its initial value since the impeller is free from solid objects.
The high efficiency of the Flygt N-pump is sustained over time due to its self-cleaning ability, keeping energy costs to a minimum.
The self-cleaning concept
All Flygt N-pumps have the same self-cleaning performance regardless of duty point.
Stage 1: Most solid objects entering the pump will pass through the impeller between the impeller vanes. If an object gets caught on the leading edge of one of the vanes, it will slide along the backswept shape towards the perimeter of the inlet.
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Stage 2: The solid objects will slide along the tip of the impeller vane inside the relief groove. The guide pin in the insert ring will push all types of solids away from the center of the impeller, along the leading edge and out through the relief groove.
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A broad range to suit your specific application
Flygt N-technology enables you to tailor the hydraulics to meet the requirements of virtually any application.
Customized modules: Standard, Hard-Iron™ or chopper
Choose the standard cast iron module for typical wastewater applications, the Hard-Iron module for extremely abrasive or corrosive applications, and the chopper module for cutting long fibers or solids in wastewater. Whatever you choose, you never sacrifice pump efficiency – and you can easily switch module if the operating conditions would change.
Cast iron impeller with hardened edges and insert ring for typical pumping applications.
Hard-Iron (60 HRC)
Extra durable option for abrasive and erosion corrosion applications.
Chopper ring for cutting long fibers or solids.
Choice of materials
Choose conventional cast iron or Hard-Iron for all Flygt N-technology components. As its name implies, Hard-Iron provides exceptional wear resistance for highly abrasive and highly corrosive wastewater.
Tougher with Hard-Iron
Hard-Iron is extremely hard. It is at least for times more durable than conventional grey iron and twice as durable as duplex stainless steel. Hard-Iron is a high-strength alloy with a 25% chromium content. It is therefore suitable for wastewater with oxygen or chloride levels up to 500 ppm.
Chopper module
Give your Flygt N-pump chopping functionality with the new chopper insert ring. Rugged, wear-resistant and self-cleaning, it cuts tough solids without clogging or sacrificing pump efficiency. Both the impeller and insert ring are made of Hard-Iron. Typical applications include agriculture, aquaculture, food processing, pulp and paper, and wastewater facilities with chopping requirements. Optional cutting knife for food and fish processing wastewater and feeding screw for agricultural wastewater are available.