Alfa Laval OptiLobe rotary lobe pumps are cost-effective alternatives for general applications requiring gentle product treatment and easy serviceability. Versatile, reliable and energy-efficient, these hygienic positive displacement pumps enhance both process flexibility and operational reliability.

Optilobe rotary lobe pump

Gentle, hygienic design with cost-effective simplicity

  • Cost-effective, hygienic pump
  • Optimal product quality due to gentle, low-shear operation
  • Robust design for long service life
  • Easy maintenance due to self-setting, front-loading seals
  • Low total cost of ownership

Rely on corrosion-resistant, all stainless-steel Alfa Laval OptiLobe rotary lobe pumps to maximize process flexibility, minimize the risk of contamination and make washdown easy. Engineered for use within the food, dairy, beverage, and home and personal care industries, these positive displacement pumps conform to CE directives and EHEDG, 3-A and FDA hygienic standards.

OptiLobe Pump technology

Take advantage of these technological features that enable Alfa Laval OptiLobe rotary lobe pumps add value to your processes. 

  • A robust platform, advanced seal design and heavy-duty, long-life bearings contribute to more uptime and higher productivity. 
  • Truly front-loading, self-setting seals with seal faces directly in contact with the media ensures superior cleanability and lubrication, improving seal life. 
  • Shaft support comprises of a rigid one-piece bearing housing and heavy-duty L10 tapered roller bearings with a minimum life of 20,000 hours. This contributes to stable shaft retention and more balanced loading, reducing the risk of pump head contact whilst decreasing maintenance requirements and increasing uptime.
  • Optional heating/cooling front covers for processes, such as sugar solutions, butter and margarine, marmalades, body butter, gels and lotions, where products tend to harden at low temperatures.


Factory-set shimming makes changing the rotor easy without the need to adjustment or retiming. Parts replacement, when required, is also simplified; high-precision components are interchangeable for pumps of the same size.

Product models

OptiLobe rotary lobe pumps are available with 10 different pump head displacements based on five different gearbox modules, flow rates up to 77 m3/h, differential pressures up to 8 bar, media temperatures up to 130°C and port size from 25 to 100 mm in diameter.


Brochure: The complete Alfa Laval OptiLobe rotary pump range

Discover how the OptiLobe pump can offer a cost-effective rotary lobe pump solution for gentle and hygienic product treatment

BrochureThe complete Alfa Laval OptiLobe rotary pump range 640x360

How it works


Operating principle

A gear train in the pump gearbox drives the rotors and provides accurate synchronization of the tri-lobe rotors.

 The movement of the counter-rotating rotors creates a partial vacuum that allows atmospheric pressure or other external pressures to force fluid into the pump chamber. As the rotors revolve, an expanding cavity forms, filling with fluid. As the blades disengage, each dwell forms a cavity. As the rotor blades engage, the cavity diminishes and fluid is, displaced into the outlet port.


Heating/cooling front covers for processes where products tend to harden at low temperatures.

Optilobe positive displacement pump-exploded view


Alfa Laval rotary lobe pumps are positive displacement pumps with rotor case, rotor case cover, rotors, rotor nuts, shafts, gearbox and shaft seals and elastomers. The pumps operate with no internal contacting parts in the pump head.

The OptiLobe can be supplied either as a bare shaft pump or mounted on a base plate complete with coupling, guard, gear motor and shroud for easy plug-and-play installation.

The standard materials of construction are 316L stainless steel for all wetted parts, all stainless-steel exterior, and EPDM for all product-wetted elastomers. EasyFit shaft seals are fully front-loading, and high-precision machine components are interchangeable for pumps of the same size.

In addition, Alfa Laval manufactures all pump parts, including the rotor case and high-precision rotors. This facilitates maintenance and results in full interchangeability of spare parts.

Part of a broad pump range

Part of the company’s rotary lobe pump range, the Alfa Laval OptiLobe is carefully engineered to provide reliable process performance, trouble-free operation and good energy efficiency in demanding applications. Alfa Laval provides a comprehensive range of hygienic pump technologies and specifications to meet customer demands with regard to preserving product quality, process efficiency, and easy maintenance.


Designed for use in the dairy, foodbeverage, home carepersonal care, biotechnology and pharmaceuticals industries, these versatile pumps are an excellent choice for duties that require gentle product treatment and easy serviceability.



For a broader range of pumps, explore these pump categories: centrifugal pumps, circumferential piston pumps and Twin Screw.

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Close at Hand Catalogue

Alfa Laval's hygienic equipment product catalogue "Close at hand" includes product leaflets, performance curves, links to animations, brochures and lists for ordering purposes.

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CAD portal

Download the product models in Neutral or Native CAD file formats. It is also possible to download 3D PDF files.

 View CAD portal 


Visit the animations site and take a look inside a product to see and understand how it works. 

View animations 

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