ITT Flygt: A New Millennium, a New Generation of N-pumps
1999 saw the global launch of ITT Flygt’s N-pump. 2000 sees the launch of the New Generation N-pumps. They have been specially designed for more efficient, reliable and trouble-free pumping over long duty periods, than any other wastewater-handling submersible. The new pumps build on the successes achieved by the company with its patented N technology
The breakthroughs achieved by the N-pump, since its launch, have led to new standards for pump requirements in the process and wastewater industry being taken under review. In light of this, 2000 will see the New Generation N-pumps, which not only include the patented N technology, with its self-cleaning impeller and high sustained efficiency, but also many other major innovations.
Many of the innovations have come following extensive surveys carried out by ITT Flygt. They revealed that customers prefer pumps that offer greater reliability, efficiency and ease of maintenance. The New Generation N-pumps do just that.
The new motors have considerably reduced rotor losses, and heat generation is concentrated around the stator, which means less heat on the bearings. They also go through a new trickle impregnation process with resin, resulting in excellent insulation and less risk of air pockets in the winding.
A new internal closed cooling system enhances the operation of dry installed pumps. It is far more efficient than existing systems and the coolant is water and environmentally approved monopropylene glycol.
The pumps have an inspection chamber to collect possible leakage and thus avert damage to the bearings, and it is equipped with a sensor that trips an alarm when it is time for a service inspection.
The Plug-in™ seal unit, provides a perfect fit and faster, simpler replacement. The design also protects the seal surface during disassembly and mounting.
The pumps have a new look, they have a smoother and rounder exterior casing, which keeps them cleaner, and they have fewer screws, making it easier to disassemble and reassemble them.
Spin-out™ ITT Flygt’s patented seal wear protection, protects the outer seal in the pumps by expelling abrasive particles from the seal chamber, and a patent pending impeller fastener makes the task of removing, trimming and mounting the impeller much simpler and faster.
All these new innovations in the pumps equals improved reliability, sustained high efficiency, and easier service. The New Generation N-pumps, launched in September, range from 7.5-70kw and have a capacity of up to 500 l/s.
Source: Xylem Inc.
