PRODUCTS & ACCESSORIES

NEMO^®Helical Rotor Pump

NETZSCH pumps cover the most diverse applications in all branches of industry

Versatile, innovative, high-performance: NEMO^® helical rotor pumps cover a wide range of applications in all branches of industry. Helical rotor pumps, as well known as progressive cavity pumps offer you continuous, pressure-stable, gentle and low-pulsation pumping of a wide variety of media.

We design each pump precisely to the requirements of your application. As a result, the pumps offer you optimum performance, service life and reliability. Your satisfaction is our top priority. NEMO^® helical rotor pumps are available with different delivery elements so that the optimum selection can always be made for your application. We promise you Proven Excellence - outstanding performance in all areas.

World market leader in progressing cavity pumps

We are the global leader in progressing cavity pumps. They are extremely versatile. Almost one million NEMO® progressing cavity pumps are in use worldwide, pumping a wide range of media in a variety of applications.

Samraj Peter

Global Productline Manager NEMO®

The technology of the helical rotor pump

Helical rotor pumps also known as progressing cavity pumps belong to the group of positive displacement pumps. The main components are a rotating rotor and a stationary stator. The rotor, hinged or elastically attached on one side, is a round-threaded screw. On the output side, the axial position oscillates. The hollow stator is elastic and has the same pitch length as the rotor. This leaves conveying spaces between the stator and the rotor, which move continuously from the inlet to the outlet side. The size of the delivery spaces and the associated delivery rate depends on the size of the construction. Except for the rotor and stator, all other components are identical.

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This means that if the flow rate or pressure of already installed NEMO^® helical rotor pumps is subsequently changed, they can be adapted to the new operating conditions by simply replacing the rotor and stator. Since the shape of the cavities is always constant, the pumped medium is not compressed. This allows you to pump not only fluids but also solids. Due to the meagre shear forces, you can even pump whole fruits undamaged. Another advantage of the valveless helical rotor pumps is that they convey continuously and with low pulsation. Even highly viscous and abrasive media can be pumped safely and without problems. They are also suitable as submersible pumps in wells and with open end connections for emptying barrels.

Applications for NEMO® pumps

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Product range of the NEMO^® helical rotor pumps

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Practical experience with NEMO® pumps

Discover first-hand how our NEMO® helical rotor pumps perform in practice and the crucial role our service plays in ensuring smooth operation. Customers report on their experiences.

“We have been relying on progressing cavity pumps from NETZSCH Pumps & Systems in our wastewater treatment plant for more than 20 years. We have been particularly impressed by their reliability. In the sludge conveying system, the pumps have been running for over two decades without requiring any servicing. In addition, we use the units for sludge thickening, chemical conveyance, and polymer dosing. We are now replacing them at selected points with new models featuring innovative enhancements. Not because they have failed, but because we want to keep our plant constantly up to date.”
Martin Langscheid
Stadtwerke Eichstätt

“In terms of value, NETZSCH products are durable and reliable, offering long-term cost savings. The pumps, like the NEMO® progressing cavity pump, deliver great all-round performance under varying conditions, essential for our operations. Overall, NETZSCH’s combination of superior customer service, expert knowledge, and high-performing products makes them a trusted partner for our business. Operating in the harshness of the mining industry these pumps continue to impress.”
Ben Howgate
WA Grouting Systems PTY LTD

“Thanks to the great service provided by NETZSCH, the costs for installing the pumps in the borehole were significantly reduced. Not only were the system costs reduced, but the service life was also increased.”
Onur Akın
Durko Çevre Enerji Tekniği ve Tic. A.Ş.

“NETZSCH offers a broad range of progressive cavity pumps that, together with our expertise in designing, optimizing and troubleshooting PCP wells, have consistently met and exceeded our client’s expectations. The products are reliable, durable, and engineered to handle demanding applications in our industry. In addition to the quality of the products, the support provided has been outstanding.“
Vasile Mogos
Endurance Lift Solutions International

“It was important to us to buy the pump directly from the manufacturer without any intermediaries. Based on our good experiences with the progressing cavity pump, we chose NETZSCH again for this application. We particularly appreciate the personal round-the-clock support and the fast availability of spare parts.”
Harald Haag
Müllerbräu Neuötting

“As a trading partner for decades, we highly appreciate the excellent quality, durability, and reliability of NETZSCH's progressing cavity pumps. Also, in after-sales and spare parts supply, we can always rely on the professionalism of NETZSCH and offer our customers in the food and beverage industry a first-class service even after decades.“
Michael Wein
G.Wein GmbH + Co.

“In Portugal, we have worked exclusively with NETZSCH for over 20 years. The high quality of the equipment and the ability to reach a wide range of activity areas have been a real added value to the Portuguese customers over the years.”
José Raposo
NETIMPRO

“This partnership marks an important milestone for us, as NETZSCH is a brand known for its quality, innovation, and reliability in the field of pumps. We are pleased to offer Czech and Slovak customers direct access to original products and technical support from one of the world’s leading manufacturers.”
Josef Rouš
Pro Pump s.r.o.

“NETZSCH is Fuglesangs most important pump partner, and we appreciate the very good cooperation and communication we have. The wide NETZSCH product portfolio offers the best quality, to the benefit of our customers' processes in many industries.“
Erik Michalsen
Fuglesangs AS

FAQ progressing cavity pumps

Progressing cavity pumps are particularly suitable for pumping highly viscous, abrasive, solid-laden or shear-sensitive media. Typical applications include the chemical, food, environmental, paper and building materials industries, as well as the oil and gas sector.

NEMO® progressing cavity pumps from NETZSCH Pumps & Systems are characterised by gentle, low-pulsation pumping, high dosing accuracy and a wide range of applications. They enable a constant delivery rate even with changing pressures and media compositions.

Progressing cavity pumps can be used to convey low-viscosity to highly viscous media, including slurries, suspensions, pastes, media with a high solids content, and sensitive or gas-laden liquids.

Yes, progressing-cavity pumps are self-priming and exhibit excellent suction performance. This makes them ideal for applications with changing fill levels or difficult suction conditions.

NEMO® progressing cavity pumps are available in numerous designs, including block, hopper and hygienic versions. In addition, various materials, seal variants, and rotor-stator combinations are available to optimally adapt the pump to the respective application.

Maintenance requirements are low and predictable. Wear parts such as the rotor and stator can be easily replaced. Maintenance-friendly designs enable short downtimes and high plant availability.

The service life depends on factors such as the medium, speed, pressure and choice of materials. Professional design and the use of original spare parts ensure a long service life and economical operation.

All relevant original spare parts are available for progressing cavity pumps from NETZSCH Pumps & Systems, including rotors, stators, seals, joint parts and other wear-related components. The spare parts are precisely matched to the pump design and ensure high operational reliability.

The correct spare part can be identified by the machine number, serial number, or item number. Spare parts lists, sectional drawings and the operating and maintenance instructions also provide support. Alternatively, the NETZSCH Pumps & Systems service team can provide expert advice on selecting the right original spare part.

Yes, specialised hygienic versions of NEMO® progressing cavity pumps meet the stringent requirements of the food and pharmaceutical industries. They are easy to clean and can be designed to meet current hygiene standards.

The experts at NETZSCH Pumps & Systems will assist you in the design, selection and integration of the right progressing cavity pump – tailored to your specific pumping tasks and process requirements.

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NEMO^®Helical Rotor Pump