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.
Delivery rate: up to 333 l/min
Funding level: up to 30 m
Impeller material: Neoprene / Nitrile (NBR) / Hypalon (CSM) / EPDM
Delivery rate: up to 333 l/min
Funding level: up to 30 m
Impeller material: Nitrile (NBR), white, FDA-compliant
Delivery rate at 1500 rpm: up to 333 l/min
Funding level: up to 25 m
Impeller material: Nitrile (NBR), white, FDA-compliant
Impeller pumps are positive-displacement pumps featuring a flexible, rubber-like impeller. As the impeller rotates, its vanes are deformed by an eccentric inner contour of the housing and then return to their original shape, thereby creating and emptying chambers. This makes the pump inherently self-priming, delivers fluid with virtually no pulsation, and handles the fluid with particular care.
Compared to centrifugal or gear pumps, impeller pumps offer a unique combination of features: they are self-priming, reversible in flow direction, gentle on sensitive products, and at the same time resistant to small amounts of gas. This makes them well-suited for transfer tasks, viscous fluids, and hygienically demanding processes in the food, beverage, and cosmetics industries.
Impeller pumps are the right choice if at least one of the following requirements is a priority:
Impeller pumps are less suitable for highly abrasive fluids, very high pressures, or continuous high-pressure circulation systems—in these cases, gear pumps or multistage centrifugal pumps are usually the better choice.
Pump performance, media compatibility, and service life depend largely on the impeller material. Linn-Pumpen supplies impellers made of five different elastomers—each tailored to the specific medium, temperature, and hygiene requirements. The temperature specifications listed below are guidelines and are verified on a project-by-project basis.
| Material | Typical applications | Temperature (approximate) |
|---|---|---|
| Neoprene (CR) | General-purpose, water, standard media | up to about 70 °C |
| Nitrile (NBR) | Oils, fats, and oil products | up to about 80 °C |
| Hypalon (CSM) | chemical products, higher temperatures | up to about 110 °C |
| EPDM | corrosive substances, cleaning agents, hot water | up to about 80 °C |
| Hygienic nitrile (NBR, white, FDA-approved) | Food, Beverages, Cosmetics, Pharmaceuticals | up to approx. 100 °C (high temperature up to 130 °C) |
Depending on the design, housings are made of brass or 1.4404 / 316L stainless steel. For hygienic applications, we use smooth, dead-space-minimized stainless steel housings with FDA-compliant elastomers. During the design phase, we determine the appropriate impeller material for your specific medium based on the medium itself, temperature, and chemical resistance.
What types of impeller pumps does Linn-Pumpen offer?
Our impeller pumps are available in several designs for industrial and hygienic applications:
Designs
Industrial impeller pumps for cleaning agents, coolants/lubricants, oils, solvents, and many chemical products.
Hygiene designs in stainless steel for food, beverage, cosmetic, and pharmaceutical applications.
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:
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):
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:
What materials are available for impeller pumps?
Industrial version
Hygienic design
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.