Pomac rotary lobe pump

Pomac rotary lobe pump

The flexible pump for hygienic standard applications up to complex sterile applications with thin fluid, viscous and/or shear-sensitive media.

The rotary design of the pump is selected depending on how viscous or lumpy the fluids to be metered are. Rotary lobe pumps are designed for continuous operation and are used in almost all industrial sectors. Five different rotary designs and five different seals are available. 

  • Flow rate max. 110,000 l/h
  • Discharge pressure max. 15 bar

Pomac rotary lobe pump

Flexible application options to assortment of rotors

The goal when developing the rotary lobe pumps from Pomac was maximum pump capacity at minimal impairment of the medium.

Along with the compact form of the construction, the volume between the rotary lobe pumps has also been optimized. This makes the rotary lobe pumps suitable for a high operating pressure up to 15 bar. The application options range up to a capacity of 110 m³/h.

Both the complete pump parts and the gear drive are made of stainless steel. The pumps can be cleaned without any effort, which speeds up maintenance. The ability to install the pump with vertical (self-draining) connections allows it to be used universally.

The standard series can be used for versatile applications, with rotors specifically developed for the respective medium.

Due to the two or four blades and self-draining feature, the hygienic version is ideal for pharmaceutical or biotechnology applications.

Pomac rotary lobe pump



  • Horizontal or vertical connection position
  • Cover heating and housing heating
  • Cover with safety valve
  • Mechanical seals (silicon carbide or tungsten carbide)
  • Mechanical seals purged (silicon carbide or tungsten carbide)
  • Lip seal, dry-run safe
  • O-ring
  • O-ring purged
ElastomersEPDM, EPDM-FDA, Viton, Viton-FDA, NBR, PTFE, Kalrez (perfluor)


  • Gentle product conveying
  • Low noise level
  • Wide application range: from dairy products to sugar mass, creams, toothpaste, sauces to doughs
  • Suitable for extreme external operating conditions (± 0 to 200° C)
  • Suitable for relatively large solids content
  • Front-loaded seal
  • Large selection of connections
  • Surfaces ≤ 0.8 µ, if desired  ≤ 0.6 µ electro-polished
  • Selection of 5 different shaft seals
  • Easy exchange with other seal designs
  • Short replacement times of the seals
  • Easy configuration of rotor tolerances
  • With certificate of proof, e.g. 3.1, FDA, USP, EHEDG

Technical data

TypePressure max.
Speed max.
Displacement max.
[l/100 rotations]


Robust metering solutions for the use in the Chemical industry
Chemicals  industry

Chemical Pumps and Metering Packages for the Chemical Industry

When critical, environmentally hazardous, toxic, or flammable fluids and suspensions need to be reliably conveyed or metered in high-pressure processes, there is no alternative to hermetically sealed metering pumps, process diaphragm pumps, and metering systems from LEWA. Hermetically sealed LEWA pumps with pressures up to 1200 bar are the first choice for the production of chemical intermediate and end products. Contact our experts and let us advise you about your individual chemical pump or system solution!

More Details
Systems and pumps for the Cleaning and Detergents industry
Cleaning and detergents industry

Pumps and Systems for the Manufacture of Detergents and Cleaners

LEWA offers continually operating, formula-controlled systems for the manufacture of household and industrial cleaners in all commercially available surfactant concentrations – from raw product to end product. Contact our experts and let us advise you – we will work with you to configure pumps and systems for the manufacture of detergents and for the production of other cleaners.

More Details
Pumps specially designed for the Cosmetics Industry
Cosmetics and personal care industry

Pumps and Systems for the Production of Personal Care Products

Processes with strict quality and hygiene requirements, such as GMP or the need to avoid preservatives, require the right equipment. We support you in the selection and the design of hygienic components and systems for producing personal care products. Contact our experts and let us advise you – we will work with you to develop customized metering solutions for your process, such as for manufacturing personal care products.

More Details
LEWA pumps and systems meet the requirements of the Pharmaceuticals industry
Pharma and Biotech Industry

Pumps and Systems for the Pharmaceuticals, Life Sciences and Biotechnology Industries

As the leading manufacturer of pumps and pump systems for the pharmaceutical, life sciences, and biotechnology industries, LEWA supports you during the development of complete solutions, which meet your process requirements exactly. Special expertise is required in the production of pharmaceuticals in order to ensure that legal requirements are met. Reliability when it comes to production, documentation, and validation are our top priorities.

More Details
Metering of sensible fluids in the food and beverage industry with LEWA pumps and systems
Food an beverages industry

Pumps and Systems for the Food and Beverage Industry

LEWA supports producers and plant construction companies in the food and beverage industries with pumps and systems for homogenization and dispersion, as well as for other processing operations in the food industry. We work with you to plan all the important process-related operations, such as conveying, metering, mixing, heating, and cooling so that you can process your raw product cost-effectively.

More Details
LEWA solutions are found also in other industries, for example in the Varnish- and Lacquer industry
LEWA solutions are found also in other industries

Pumps and Metering Systems for Other Industries

LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.

More Details


Pomac rotary lobe pump are found in many applications.

The rotary lobe pumps convey sensitive media at low shear load and are particularly suitable for:

  • Highly pure drug and ingredient manufacturing
  • Cell suspensions and serums
  • Cosmetic products (creams, pastes, shampoo, etc.)
  • Filtration processes
  • Production of dairy products
  • Sauces and mayonnaise production Confectionery production
  • Glucose dilutions
  • Concentrates Organic solids in suspensions
Process chromatography

Downstream processing

LEWA systems and gradient mixers are used in downstream processing of chemicals and biotechnology. We look forward to receiving your inquiry!

More Details
Production of fabric softener

Fabric softeners

At LEWA, find out about plants and systems for fabric softener production. Our experts are happy to talk to you about your custom solution!

More Details
Biofuel production

Production of biodiesel

LEWA provides metering systems for producing biodiesel and other biofuels. Consult us!

More Details
Gelatine production for sweets

Production of gelatine

In the production of gelatin and in the fabrication of gelatin products, LEWA pumps and systems are used. We would be happy to give you more information!

More Details
Yoghurt production in the food industry

Yoghurt production

Pomac rotary lobe pumps are used for transferring yogurt products to the filling station. We will be happy to give you more information about industrial yogurt production!

More Details
Production of creams

Production of creams

With its metering systems and diaphragm pumps, LEWA offers the right solution for recipe-compliant production of creams.

More Details
Upstream Processing

Upstream Processing

LEWA pumps are used in all phases of upstream processing.

More Details

Solutions for flavor and color metering in the confectionery industry

LEWA creates custom-made, complete solutions that are ready to implement in your applications. 

More Details


Pomac pumps - Rotary lobe pumps and centrifugal pumps for hygienic processes.(EN)

Pomac rotary lobe pumps and centrifugal pumps are used worldwide in the food industry, in the production of beverages, and in the pharmaceutical and chemical industries.
3 MB | pdf | 18.02.2022


Pomac Pumpen - Drehkolben- und Kreiselpumpen für hygienische Prozesse. (DE)

Pomac Drehkolben- und Kreiselpumpen finden Anwendung in der Nahrungsmittelindustrie, bei der Getränkeherstellung sowie in der pharmazeutischen oder chemischen Industrie.
3 MB | pdf | 18.02.2022


Keep in touch with us

Get insights into our products and applications for liquid metering. You will also receive all the latest news about LEWA as well as invitations to our exclusive events.

Social Media

LEWA is on LinkedinLEWA is on YouTubeLEWA is on Instagram
©2024 LEWA GmbH  Terms & Conditions Privacy Imprint