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LeviMag UltraPure magnetic mixer designed for high-purity applications, ensuring efficient and hygienic mixing performance.
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Alfa Laval Magnetic Mixer UltraPure, LeviMag

LeviMag UltraPure magnetic mixer designed for high-purity applications, ensuring efficient and hygienic mixing performance.

ABS offers Alfa Laval Magnetic Mixer LeviMag UltraPure that represent a breakthrough in mixing technology. The unique levitating impeller design allows the mixer to operate under dry conditions which minimizes product loss and positively impacts process economy.

In biotech and pharmaceutical applications, where product is particularly valuable, these positive impacts can pay back the initial cost of investment including the mixer, installation, testing, and revalidation in just a matter of weeks.

Alfa Laval Magnetic Mixer LeviMag UltraPure maximize product yield in biotech, pharmaceutical and other aseptic applications with high hygienic demands. The unique levitating impeller design enables effective mixing right down to the last drop.

Models

  • MM 338-4
  • MM 338-6
  • MM 434-8
  • MM 434-10

Related Industries:

Processed Foods, Dairy, Beverages, Pharmaceutical, Biotech

Maximum yield magnetic mixer

Alfa Laval Magnetic Mixer LeviMag UltraPure represent a breakthrough in mixing technology. The unique levitating impeller design allows the mixer to operate under dry conditions, making it possible to mix down to the last drop. This minimizes product loss, which may positively impact process economy. In biotech and pharmaceutical applications, where product is particularly valuable, these savings can pay back the initial cost of investment, including the mixer, installation, testing and revalidation, in just a matter of weeks.

Wide range of speeds

The levitating impeller design eliminates friction, making it possible to mix at speeds ranging from 10 to 600 rpm. The 4 sizes of mixers enables the flexibility to handle a wide range of fluid types and mixing duties, such as high intensity mixing and gentle product mixing.

Gentle product treatment

The unique eight-wing design of the impeller delivers efficient mixing at very low speeds. This ensures the most gentle product treatment possible with very low share forces.

Unparalleled hygiene, optimized operation

The magnetic mixer range offers unparalleled hygiene due to its levitating impeller design. The mixer rotates at very low rpm during cleaning, resulting in a more effecient cleaning. Because there are no entrapment areas, the magnetic mixer can be completely drained of product and cleaning solutions. The open design also ensures full coverage by the cleaning solution and contributes to efficient removal of product residues. The lack of friction also minimizes product contamination from wear particles.

Fully documented

Alfa Laval Magnetic Mixer LeviMag UltraPure are backed by the assurance of our comprehensive documentation package, securing safe material and full traceability.

LeviMag Benefits

  • Maximum yield magnetic mixer
  • Minimizes product loss
  • Wide range of speeds

LeviMag Applications

Alfa Laval Magnetic Mixer LeviMag UltraPures offer effective mixing for applications with high demands on hygienic and aseptic design.

Working Principle

The patented levitating bearing makes the mixer fully drainable and able to run dry. Alfa Laval Magnetic Mixer LeviMag UltraPure performance ranges from low shear mixing at around 10 rpm to high intensity mixing with vortex at up to 250 rpm. Depending on the mixer task, the range covers from 30 – 10,000 liters of nominal batch size.

Standard Design

The Alfa Laval Magnetic Mixer LeviMag UltraPure consists of a weld plate and a mixer unit, including gear drive. The weld plate is ordered and delivered separately to enable early preparation of the mixer installation. The mixer must be controlled by a variable frequency drive (VFD) unit matched perfectly with the mixer. The VFD is pre-programmed for optimum performance. Any brand of locally sourced VFD may be used under observation of the mixer manual.

Materials

Impeller and Weld Plate 316L
Drive Rotor and Distance Piece 316L
Motor and Gearbox ANSI/NSF 51 compliant paint
Male Bearing Zirconia YTZP
Male Bearing Gasket ISOLAST 9501 (perfluroelastomer)
Female Bearing Silicone carbide
Gearbox Oil USDA-H1

Technical Data

Polish Product wetted surface finish Ra < 0.5 µm (20 µinch) mechanical polish
Option Ra < 0.5 µm (20 µinch) and electropolished
Pressure Working pressure -15 – 100 psig
Temperature Range Product mixing (10 – 250 rpm) 194ºF max
CIP (max 50 rpm) 203ºF max
SIP (0 rpm) 302ºF max
Weight MM 338 27 lb
MM 434 66 lb
Voltage and Frequency AC motors 3×230/460 V, 60 Hz
AC VFD 240/120 V, 48-62 Hz
Protection Class AC motors IP66
AC VFD stand alone IP66
AC VFD enclosure unit IP20 Nema 4X
Motor Sizes MM 338-4/6 0.5 hp
MM434-8/10 1.5 hp

How it works

The magnetic mixer transmits the required torque by means of magnetic coupling. The magnetic coupling consists of two sets of permanent magnets and a weld plate that separates the magnet sets. One set of magnets is mounted in the impeller and the other set in the rotor. When the rotor revolves by means of the gear drive, the interaction between the two sets of magnets creates a magnetic coupling, which strenghting the rotation of the impeller. To avoid loss of magnetic coupling, it is necessary to gradually ramp up the rotation by means of a frequency inverter. The typical ramp up time is approximately 30 seconds. The frequency inverter is also used to adjust the speed.

Since the magnetic field couples across an air gap and through the weld plate, the tank is not compromised and therefore does not require a seal. This eliminates the risk of leakage and product contamination.

The unique design of the Alfa Laval magnetic coupling ensures the levitation of the impeller at all times. This enables the complete drainability of process fluids and the free flow of CIP liquid and steam around all parts of the mixer, thereby ensuring thorough cleaning. Impeller levitation also eliminates axial wear.

The eight-winged impeller design ensures balanced operation at very low speeds and minimize wear of the bearings. Male bearings can easily be replaced with a bearing tool.