Impeller pumps
Our impeller pumps convey aqueous to viscous media gently and with low pulsation; they are self-priming, reversible and suitable for the
continuous transfer in mechanical engineering, chemistry and food technology.
Impeller pumps
Overview of series
Link zu: Impeller pumps industrial design
Industrial version - power unit
Industrial version - power unit
Delivery rate: up to 333 l/min
Funding level: up to 30 m
Impeller material: Neoprene / Nitrile (NBR) / Hypalon (CSM) / EPDM
Link zu: Impeller pumps hygienic design
Hygienic design - unit
Hygienic design - unit
Delivery rate: up to 333 l/min
Funding level: up to 30 m
Impeller material: Nitrile (NBR), white, FDA-compliant
Link zu: Impeller pumps with free shaft end
Free shaft end
Free shaft end
Delivery rate at 1500 rpm: up to 333 l/min
Funding level: up to 25 m
Impeller material: Nitrile (NBR), white, FDA-compliant
FAQ Impeller Pumps
What are impeller pumps and how do they work?
Impeller pumps are self-priming positive displacement pumpsAn elastic impeller with flexible blades runs eccentrically in the pump housing. As it rotates, the chambers between the blades expand and contract.
This creates a Continuous, virtually pulsation-free volume flow.
Impeller pumps from Linn-Pumpen combine the typical advantages of centrifugal and positive displacement pumps:
- Self-priming up to approx. 3 m Suction height (with correctly designed suction line).
- displacement principle: Good suction performance and relatively constant volume flow, even with viscous media.
- Gentle handling Sensitive, viscous, or shear-sensitive products – important in food, cosmetic, and chemical applications.
- Reversible operation: By changing the direction of rotation, material can be conveyed in both directions (filling/emptying).
What types of impeller pumps does Linn-Pumpen offer?
Our impeller pumps are available in several designs for industrial and hygienic applications:
- Units with IEC standard motor
Compact units with directly mounted motors – ideal for mechanical engineering, plant construction, and mobile applications. - Impeller pumps with free shaft end
For attachment to existing drives or gearboxes, e.g., in systems with their own motor or gearbox concept. - Connection variants
Depending on the series:
– Threaded and flanged connections for industrial applications
– Hygienic connections (e.g., clamp, milk thread) for food and cosmetic processes. -
Designs
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Industrial impeller pumps for cleaning agents, coolants/lubricants, oils, solvents, and many chemical products.
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Hygiene designs in stainless steel for food, beverage, cosmetic, and pharmaceutical applications.
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For which media are impeller pumps suitable in industry and food technology?
Industrial applications
Industrial impeller pumps convey, among other things:
- Water and cooling water
- Glycol and heat transfer fluid mixtures
- Cleaning and process fluids
- Emulsions and cooling lubricants
- Oils, diesel, and other non-abrasive media
- Many chemical products – with suitable impeller materials.
Food and hygiene sector
Hygienic impeller pumps (stainless steel 1.4404/316L) with white, FDA-compliant impellers are used, for example, for:
- Milk, cream, yogurt, and dairy products
- Beverages, juices, wine, spices, distillates
- Syrups, sugar solutions, honey (diluted or heated), and fruit preparations
- Liquid cosmetics and pharmaceutical products (creams, lotions, solutions).
Smooth surfaces, housings with minimal dead space, and hygienic seals facilitate cleaning—either manually or as part of a plant cleaning concept.
Boundaries
Highly abrasive media, high solids content, or very coarse particles cause increased wear in impeller pumps.
Even extremely high viscosities (e.g., cold, thick honey) set limits.
What flow rates and pressures do your impeller pumps cover?
Flow rates
Depending on the series, impeller pumps from Linn-Pumpen can handle small quantities for dosing/transfer tasks up to ca. 333 l/min.
Pressures / Delivery heights
The impeller pumps are designed for low to medium pressures designed:
- Conveying heights typically up to approx. 30 m, accordingly until Approx. 3 bar differential pressure (depending on media and speed).
- In addition, other pump types are generally used for higher pressures.
(e.g., centrifugal or gear pumps) are used.
The volume flow, differential pressure, medium, temperature, and pipe lengths are among the factors that are crucial for a clean design.
What viscosities and temperatures can impeller pumps handle?
Viscosity
Impeller pumps convey Aqueous to highly viscous mediaAs viscosity increases, the flow rate decreases, power requirements increase, and the achievable differential pressure decreases.
Temperature ranges
The permissible media temperature depends primarily on the impeller material and the sealing materials.
Typical areas in the Linn program (guideline values):
- Neoprene: approx. 5–70 °C
- Nitrile (NBR): approx. 5–80 °C
- EPDM: approx. 5–80 °C
- Hypalon (CSM): approx. 5–110 °C
- Hygienic impeller / Hygienic HT: up to approx. 100 °C or up to approx. 130 °C
Are impeller pumps self-priming and suitable for filling/emptying?
Self-priming
Impeller pumps are designed self-priming and, with a correctly designed suction line, achieve suction heights of up to approx. 3 mThis feature is particularly useful when emptying drums, IBCs, or tanks if the pump cannot be installed in a flooded position.
Dry running during start-up
Short dry running phases during suction cannot be completely avoided due to the design.
However, as with other flexible impeller pumps, prolonged dry running should be avoided as it can lead to overheating and wear of the impeller and mechanical seal.
Reversible operation
Many impeller pump series can be change in direction of rotation can be operated in both conveying directions.
This makes impeller pumps particularly suitable for:
- Filling and emptying drums, IBCs, and storage tanks
- Switchable product and returns in process lines
- Circulation mode with alternating flow direction (e.g., flushing/backwashing).
What materials are available for impeller pumps?
Industrial version
- Housing: Brass or stainless steel (depending on series and medium).
- Impeller: Elastomers such as neoprene, nitrile (NBR), Hypalon (CSM), or EPDM.
Selected according to medium, temperature, and chemical resistance.
Hygienic design
- Housing: Stainless steel 1.4404/316L with hygienic, smooth surface.
- Impellers: white, FDA-compliant NBR impellers and special hygienic/hygienic HT impellers for higher temperatures.
- Connections: depending on the series, e.g., clamp, milk thread, or other hygienic connections.
This allows impeller pumps to be specifically tailored to the medium, cleaning requirements, and relevant standards in Food, beverage, cosmetics, and pharmaceutical applications adjust.
Do you still have questions or need support?
Contact us and let us work together to find the best solution for your requirements.
