PREMA-SERVICE is a German specialist in mixing technology with over 50 years of experience in the design, manufacture and service of mixers for industrial applications worldwide. The company has built a very extensive installed base in sectors such as refining, petrochemical, chemical, fuel storage, water treatment and other process industries, drawing on a combination of applied calculation, reliability-oriented design and a clear long-term service commitment. This international track record, combined with its experience in repair, maintenance and modernisation of equipment with decades of operation, reinforces its positioning as a specialist manufacturer rather than a simple supplier of standard mixers.
PREMA-SERVICE side-entry mixers are designed for large tanks where mixing must fulfil very specific functions: homogenising products, preventing deposits and sediments, maintaining uniform temperature or supporting blending operations in tanks of up to approximately 150,000 m³ and diameters of up to 120 metres, with liquid heights of the order of 30 metres. The range includes fixed versions for homogenisation of refining products and chemicals, swivel versions to reinforce sedimentation prevention in crude oil or storage tanks, high-temperature versions for operation up to 220–240°C in applications such as bitumen or thermal products, and options with double mechanical seal for more demanding services.
One of PREMA-SERVICE’s most differentiating features is the robustness of its gearbox. The manufacturer highlights a special reducer construction with undivided shaft, quiet running, low wear, low maintenance and high overload safety, aspects particularly valuable in lateral mixers subjected to continuous operation and large forces on the shaft, propeller and tank. This is complemented by a particularly compact design with low torque transmitted to the tank wall, in many cases avoiding the need for reinforcements or additional supports. This architecture not only improves mechanical integration, but reduces vibrations, simplifies installation and promotes stable long-term operation.
Overall, PREMA-SERVICE offers a solution very well focused on storage and process tanks where mixing is not an accessory but a critical function for maintaining product quality, avoiding stratification, reducing sedimentation and sustaining operational availability over years of service.