Alfa Laval AL Series Agitator
AL Series top mounted agitators from Alfa Laval offer mixing solutions to meet many requirements in food, dairy, beverage, pharmaceutical, biotechnology, and cosmetic applications. AL agitators can be sized for several applications for both atmospheric and pressurized tanks and can be configured for use in sterile/aseptic applications.
There are four configurations available to best suit your application needs: Top mount (ALT), top mount with bottom support (ALTB), bottom mount (ALB), and side mount (ALS). To ensure the best possible device for your specifications, each application is evaluated carefully. This allows proper sizing, optimized power consumption, and the lowest possible pricing for each agitator.
Models
- ALT - top mounted
- ALTB - top mounted w/ bottom support
- ALS - side mounted
- ALB - bottom mounted
Alfa Laval is a leading global supplier of products and solutions within the key technology areas of heat transfer, separation, and fluid handling.
STANDARD DESIGN
The Alfa Laval range of propeller agitators is designed to meet almost every customer requirement. Due to their modular build, the agitators can be designed for numerous applications within the sanitary industry. The modular construction is designed with the aim to meet both European and American standards and regulations, such as EHEDG, USDA, FDA, 3-A, and more.
The top mount ALT agitators are characterized by their free-hanging build. The top mounted, bottom steady ALTB agitator offers the same solutions as the ALT but with higher flexibility in mechanical design. Depending on the size of the agitator, a bottom support may result in a more economical configuration. The Alfa Laval bottom support comes in a sanitary design, allowing easy clean-in place (CIP).
Materials
| Steel Parts | 316L (standard), 304, 904L, or SAF 2205 |
| Seal Parts (O-rings or Bellows) | EPDM, FPM/FEP (only for sanitary o-rings), or FPM |
| Mechanical Seal Parts | Carbon, carbon (FDA), silicon carbide |
Applications
AL Series agitators are used in milk storage tanks and mixed product tanks to maintain homogeneous media. They are also applicable for dissolving, mixing, and solutions, like in fluid-and-fluid mixing (i.e. yogurt mix tanks, fruit mix tanks, flavored milk mix tanks, and syrup mix tanks).
Other applications include:
- Solid dispersion - Powder-and-fluid mix tanks, etc.
- Suspension - Fluids with particles, juice tanks, etc.
- Heat transmission - Circulation of media in tanks with dimple jacket (cooling or heating)
CONFIGURABLE DESIGN
AL series agitators are designed to be fully configurable. The configuration can be divided into the following elements:
- Drives (drive, shaft support, and shaft diameter)
- Seal arrangements (oil trap and shaft seal type)
- Shaft (length)
- Energy saving foils (propeller type and surface finish)
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FAQs
- What is the difference between ALT and ALTB top mount agitators?
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ALT is a free-hanging, top mount agitator. ALTB is also a top mount but adds a sanitary bottom support with higher flexibility in mechanical design; depending on agitator size, the bottom support may result in a more economical configuration.
- Can AL Series top mounted agitators be used on pressurized or aseptic tanks?
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Yes. AL series agitators can be sized for atmospheric or pressurized tanks and can be configured for sterile/aseptic applications.
- Which mounting configurations are available in the Alfa Laval AL Series?
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Four options are offered: top mount (ALT), top mount with bottom support (ALTB), side mount (ALS), and bottom mount (ALB).
- Do AL Series agitators meet sanitary standards and support CIP?
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The AL series is designed to meet European and American standards and regulations such as EHEDG, USDA, FDA, and 3-A. In addition, the Alfa Laval bottom support comes in a sanitary design, allowing for easy clean-in-place (CIP) operations.
- What materials and seal options are available?
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Steel parts: 316L (standard), 304, 904L, or SAF 2205.
Seal parts (O-rings or bellows): EPDM, FPM/FEP (only for sanitary O-rings), or FPM.
Mechanical seal parts: carbon, carbon (FDA), or silicon carbide.
- How is sizing determined for an AL series agitator?
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Each application is evaluated carefully to ensure proper sizing and optimized power consumption for the specified tank and duty.
- How do the energy saving foils factor into performance?
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AL Series agitators can be configured with energy saving foils (propeller type and surface finish). Combined with application-specific sizing, this supports optimized power consumption.
- What applications and industries do AL Series agitators cover?
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Typical duties include keeping media homogeneous; dissolving and mixing (e.g., yogurt, fruit, flavored milk, and syrup mix tanks); solid dispersion (powder-and-fluid); suspension (fluids with particles, juice); and heat transmission (circulation in dimple-jacketed tanks for cooling or heating).
Industries include processed foods, biopharmaceuticals, high-acid foods, dairy, beverages, brewery, home & personal care, and chemical.
- Is the shaft length configurable across the AL series?
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Yes. AL Series agitators are fully configurable, including shaft length, to match tank depth and process requirements.