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Alfa Laval ALB Bottom Mounted Agitator

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Efficient Mixing and Agitation

Bottom mounted agitators Type ALB

Applications
ALBThe Alfa Laval bottom mounted agitator offers mixing solutions to meet any requirements in food, dairy, beverage, pharmaceutical, biotechnology or cosmetic applications.
Type ALB agitators can be dimensioned for several applications for both atmospheric and pressurized tanks and furthermore for use in sterile/aseptic applications. The correct sizing of the agitators ensures an optimised solution offering low energy consumption and configuration to meet specific design requirements. Examples are listed below:
ALB Application Examples
 
Standard design
The Alfa Laval range of bottom mounted propeller agitators is designed to meet almost every customer requirement. Due to their modular build the agitators can be designed for every type of application with 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, 3A etc. Please note that Alfa Laval also offer other agitator solutions:

. Type ALT, top mounted agitators
. Type ALTB, top mounted agitators with bottom steady bearing
. Type ALS, side mounted agitators

To read more about these agitator solutions, please see separate PD Sheets.

Configurable design
ALB Img 1Type ALB agitators are fully configurable design and the configuration can be divided into the following elements:

. Drives (drive + shaft support + shaft diameter)
. Seal arrangements (oil trap + shaft seal type)
. Shaft (length)
. Energy Saving Foils (propeller type + surface finish)
. Options

Each element has a broad range of different characteristics which makes it possible to size the agitator for all applications and requirements.

Advantageous and profitable design
Each configuration offers a number of advantages, which are shown in the examples below:
ALB Img 2ALB Operation Features
 
ALB Page 3
 
Motor
Motor size and speed as required for duty.
As standard with IEC motor IP55, other types on request.
As standard painted RAL5010.

Voltage and frequency
As standard for 3x380 to 420V, 50Hz - 3x440V to 480V, 60Hz.
All motor voltages and frequencies are available.

Gears
Different gear types available according to configuration.
As standard filled with normal synthetic or mineral oil, optional: Food approved oil.
As standard painted RAL5010.

Materials
List the range of materials available for wetted parts:

Steel parts: . . . . . . . . . . . . . . . . . . . . . .AISI 316L (standard)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AISI 304
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AISI 904L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAF 2205
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

Specific selection of materials will depend on the actual configuration selected.

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

ATEX - option
Agitators can be delivered approved for use in an ATEX environment with declaration of conformity according to directive 94/9/EC, approved according to ATEX categories:
In tank: II1GDcTX, II2GDcTX or II3GDcTX
Outside tank: II2GDcTX or II3GDcTX

NOTE: Not all configurations can be delivered according to ATEX directive 94/9/EC.

Dimensions
Standard propeller diameter range: 125 mm to 1900 mm.
Specific dimensions on the drive unit and propeller(s) will depend on the actual configuration selected.

Enquiries
The following information is required to ensure correct sizing and configuration for ordering:
For budget pricing use the following enquiry handling form from Alfa Laval (electronic version): "Simple enquiry, agitator".
For detailed quotation use the following inquiry handling form from Alfa Laval (electronic version): "Advanced enquiry, agitator".

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