Rotary Lobe pumps

The original design of the rotary lobe pump goes back to the early ’30s and has since then been further developed and improved. Johnson Pump has long experience in rotary lobe pumps. Market knowledge and appreciation of customer needs have been used to improve the existing rotary lobe pump concept with new features and customer benefits. 

Rotary lobe pumps are easy to clean and have gentle product handling characteristics. They contain few cavities, which reduces the risk of bacterial growth and makes them particularly suitable for the transport of sensitive fluids – from glue to whole strawberries.

Application field, Rotary Lobe pumps

  • Dairy, Food, and Beverages

  • Pharmaceutical, Medicine, and Bioprocessing

  • Chemical

  • Cosmetics and personal care

  • Pulp & paper

TopLobe - Tri-lobe Rotary lobe pump

Product Type:

Hygienic

Tri-lobe rotary lobe pump, designed to handle most applications in today’s processing industries.

 

The TopLobe series is available in 12 different sizes. Shaft seal options include single and double mechanical as well as lip seals. Multi-foot for vertical or horizontal mounting. Heating/cooling systems for the front cover. Built-in safety relief valves as an option. Connections from 20 mm to 150 mm.

Features

  • Simple, clean and robust construction - Hygienic, minimum risk of product entrapment, easy to clean either by CIP, SIP or manually, short cleaning downtimes

  • Easy maintenance - Easy service and maintenance, simple gearbox construction

  • Gentle product handling - Traditional tri-lobe design gives gentle handling, low pulsation, and capability of handling particles

  • Large selection of shaft seals - Easily interchangeable with other seal types, short downtimes

  • Shim-free, oil lubricated gearbox - Easy to service, longer life 

TopLobe Plus Rotary lobe pump

Features

  • Smooth flow

  • Gentle product handling

  • Dry running ability with double seal

  • Handles low and high viscosity products

  • Simple maintenance

  • Hygienic design

  • Low sound level

  • CIP capability standard

  • The free-draining pump housing

  • Unique rotor attachment

  • Robust construction

  • Process flexibility

  • Single mechanical seals standard. Optional double mechanical seals also available

  • Grease lubricated bearings for positive lubrication over speed, temperature

Product Type:

Hygenic

Rotary Lobe Positive Displacement Pump with optimal efficiency

TopWing- Ultra Hygenic Rotary lobe pump

The TopWing-series is available in 8 different sizes. Shaft seal options include single mechanical, quenched, double flushed, O-ring. Feet for vertical or horizontal mounting. Safety relief valves are available built-on or separately. Pre-heating/cooling devices in the front cover and/or at the seals. Connections from 25 mm to 100 mm.

Product Type:

Ultra Hygenic

Heavy duty Ultra-hygienic rotary lobe pump designed for the most demanding applications.

Features

  • Superior hygiene - Self-draining rotor case and mechanical seal assembled in the liquid. Low carbon stainless steel with smooth surfaces. Easy to clean – CIP, SIP or by hand, with a minimum of entrapped liquid

  • Validated and certified - Pump can easily be validated into Ultra-hygienic applications

  • Package of certificates available as an option, an example: 
    -Flow and pressure tests 
    -Cleanability certificates as EHEDG and 3-A 
    -Material certificates as 3.1, FDA, USP VI and AFO 

    -Certificates of surface roughness, welding, electropolishing 

    -ATEX certificates (Hazardous zone) 

    -Quality (ISO 9001) and environmental (ISO 14000) certificates

  • Gentle product handling - Rotors with smooth performance and minimized back slip. Able to handle particles

  • Easy maintenance - Front-loaded product seals and robust bearing assembly without shimming

  • Integrated shaft and gear design - The complete pump is made of stainless steel. The shaft bearings are integrated into the rotor case. Large shaft diameters and strong bearing design results in small shaft deflections and allows having small clearances inside the hydraulic part. The use of duplex steel for the rotors increases wear resistance and improves behaviour on higher temperatures

  • Different clearance classes – Depending on temperature, pressure and viscosity

  • Multirotors or BiWing rotors – Optimal performance 

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