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Agitator Type ALTB

Alfa Laval Type ALTB -
Top-Mounted Agitator

Alfa Laval Top-Mounted Agitators with bottom steady bearing offer mixing solutions to meet a wide range of requirements in Food, Dairy, Beverage, Distilling, Pharmaceutical, Biotechnology or Personal Care applications. 

ALTB Agitators are suitable for both atmospheric and pressurised tanks in a range of sizes, allowing for optimal power consumption. The addition of a bottom support ensures reliable operation by stabilising the shaft. These Agitators can also be configured for use in sterile/aseptic conditions.

Type ALTB

Key Features

Rectangle-Benefits (1)

Alfa Laval Type ALTB
Benefits

Technical Data

Motor

Motor size and speed are configured as required for duty.
As standard with IEC motor IP55. Optional: IP66. As standard painted RAL5010

Voltage And Frequency

As standard for 3x380V to 420V, 50Hz – 3x440V to 480V, 60Hz. Other motor voltages and frequencies are available.

Gears

Different gear types available according to configuration.
As standard filled with food-approved oil. As standard painted RAL5010.

Product Wetted Surface Finish

Industrial, shot peened: Ra < 3.2μm
Hygienic, polished: Ra < 0.8μm
Hygienic (UltraPure), polished or electro polished: Ra < 0.8μm

ATEX – option

Agitators can be delivered approved for use in an ATEX environment with declaration of conformity.

Physical Data

Materials

Steel parts:

  • AISI 316L (standard)
  • Other materials on request

 

Seal rubber parts (O-rings or bellows):

  • EPDM
  • FPM/FEP (only for stationary O-rings)
  • FPM
  • Other materials on request

 

Mechanical seal parts:

  • Carbon
  • Carbon (FDA)
  • Silicon carbide

Material certificate – option

3.1 Material certificates/FDA conformity statement according to 21 CFR177 on steel/elastomer parts in contact with media.

Dimensions

Standard propeller diameter range: ø125mm to 1900mm
Specific dimensions on the drive unit and propeller(s) will depend on the actual configuration selected. 

Agitator Type ALTB Technical Data

Spec Sheets

Download the Full
Specification Sheet

How Type ALTB Works

The Alfa Laval ALTB Top-Mounted Agitator with bottom steady bearing, offers a mixing solution to meet a wide range of requirements in Food, Dairy, Beverage, Distilling, Pharmaceutical, Biotechnology or Personal Care applications. 

The ALTB Agitator has an electrical drive motor that either directly or via a gearbox, rotates the Agitator shaft and EnSaFoil Impeller(s). This unique impeller design and highly effective axial pumping effect minimises shear forces on the product, and ensures the product is treated gently, resulting in highly effective mixing and blending of the entire tank contents.

Duties Typical Examples
Maintaining mixture homogeneity Milk storage tanks, cream tanks, mixed product tanks, UHT, and product storage tanks
Mixing suspensions and solutions Fluid and fluid mixing, drinking yoghurt and fruit mix tanks, flavoured milk mix tanks, and syrup mix tanks
Dispersing Powder protein and oil mix tanks, micro salt and milk product mix tanks
Suspension Fluids with particles, juice tanks, crystallizing tanks, etc.
Heat transmission Circulation of media in tank with dimple jacket (cooling or heating)
Flocculation Wastewater treatment tanks
Operation features Due to
Low energy consumption The wide range of high efficiency propellers and drive units makes it possible to design for low operational costs
Gentle product treatment The wide range of high efficiency propellers makes it possible to design for low shear operation
Hygienic features Due to
Connections inside the tank (risk zones) can be minimised Bearing frame drives with drive shaft and special internal shaft connection without having a flange coupling inside the tank
Good drip off properties No plane surfaces or grooves on internal parts
Easy CIP No interior shadow sides between the blades and smooth surfaces
Maintenance features Due to
Easy bottom bearing replacement Wear bushings can be replaced without dismantling the Agitator drive

Type ALTB Agitator Product Documents

Top Mounted and Bottom Support
Agitator Type ALTB Datasheet

Datasheet
Instruction

Top Mounted and Bottom Support Agitator
Type ALTB Instruction Manual

Recent Success Story

Agitator retrofit boosts dairy energy efficiency

Learn how retrofitting helped Milchwerke Oberfranen West eG, an international producer of fine cheese specialties, boost efficiency with up to 80% energy savings.

Extend the performance of your Agitator

Agitator
Servicing & Maintenance

Our dedicated servicing and maintenance team can provide you with the parts and expertise to ensure uptime and maximise operational efficiency.

The ALTB Top-Mounted Agitator is designed for a wide range of tank mixing and blending duties across the dairy, food, beverage, personal care, biotechnology and pharmaceutical industries.

Industry Applications of the ALTB Agitator

The ALT-B agitator is perfect for tall product mixing tanks in the beverage industry, ensuring efficient and consistent blending of large volumes while maintaining product quality.

Ideal for chemical applications where a less hygienic design is acceptable, the ALT-B agitator provides reliable mixing for various pharmaceutical and chemical processes.

The ALT-B agitator is designed for large grain tanks in distilling, ensuring effective suspension of solids and consistent product quality throughout the mixing process.

Enquire About Agitator Type ALTB

FAQs

The Alfa Laval ALTB Agitator is a top-mounted, bottom supported Agitator suitable for mixing applications in both atmospheric and pressurised tanks.

The Alfa Laval ALTB Agitator is designed for a wide range of tank mixing and blending duties across the dairy, food, beverage, brewery, personal care, biotechnology and pharmaceutical industries.

The Alfa Laval ALTB Agitator meets both EU and US standards and regulations such as EHEDG, USDA, FDA and 3-A Sanitary Standards.

The seal arrangements available for the ALTB Agitator are:

  • ME-GP-yy (Seal flange with Oring seal against tank flange, drain, oil trap and shaft seal: radial seal for atmospheric tanks)
  • LF-R (Lantern (spacer), seal flange with O-ring seal against tank flange, drain, oil trap and shaft seal: radial seal for atmospheric tanks)
  • LF-S/LF-S3 (Lantern (spacer), seal flange with O-ring seal against tank flange, drain, oil trap and shaft seal: single mechanical dry running seal for high/low pressure applications)
  • LF-D (Lantern (spacer), seal flange with O-ring seal against tank flange, drain, fluid trap and shaft seal: double mechanical seal for high pressure applications and aseptic use)

The range of high-efficiency drive units and EnSaFoil impellers make it possible to design the ALTB Agitator for maximised energy efficiency.

Our team of mixing technology experts will be happy to advise you on the ideal Agitator type and configuration for your applications. We will need the following information to ensure we can properly specify your unit:

  • Tank geometry
  • Product properties
  • Task of Agitator

Alfa Laval EnSaFoil impellers can range from just 125mm in diameter to 1900mm, so the ALTB can be used in almost any size of tank.

Alfa Laval Master Distributor