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
Elastomers EPDM, 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

Type Pressure max.
Speed max.
Displacement max.
[l/100 rotations]
PLP1-3/4 15 1,000 4.2
PLP1-1 15 1,000 6
PLP1-1.5 15 1,000 10
PLP15-2 8 1,000 20
PLP2-1.5 15 1,000 22
PLP2-2 15 1,000 30
PLP2-2.5 15 1,000 36
PLP3-2 15 750 55
PLP3-3 15 750 100
PLP3-4 15 750 130
PLP4-4 15 750 250



LEWA supplies you with individual chemical pumps and customized system solutions for various areas of application in the chemical industry.

Cleaners & Detergents

We offer reliable, formula-controlled systems for the production of cleaners and detergents. Ask the LEWA experts for more information now!

Personal care

LEWA is your reliable partner in the production of personal care products. Our systems meet the strictest quality and hygiene requirements. Ask us for more information!

Pharma, Life Science & Biotech

LEWA supplies pumps and systems for the pharmaceutical, life sciences, and biotech industries that comply with all hygienic requirements. We're happy to help you!

Food & Beverage

Use LEWA pumps and system solutions for your homogenization processes in the food and beverage industry. Ask our experts for more information!

Other Industries

As specialists in fluid handling, we of course also have experience in many other industries. Simply contact our consultants to find out more!


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

Downstream processing

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

Fabric softeners

Production of fabric softener Find out more about our plants and systems for fabric softener production. Our experts are happy to talk to you about your custom solution!

Production of biodiesel

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

Production of gelatine

Gelatine production for sweets 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!

Yoghurt production

Yoghurt production in the food industry 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!

Production of creams

Production of creams LEWA diaphragm pumps and systems meter and mix substances necessary for the production of skin cream. We are happy to assist you with your individual task, get in touch with our experts!

Upstream Processing

Upstream Processing LEWA pumps are used in all phases of upstream processing.


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 | 22.02.2019

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 | 14.10.2019

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