Fluid Bed Systems

MAGNAFLO® Fluid Bed Systems

Optimized Drying, Coating and Granulation

Design flexibility ensures peak performance for fluid bed dryers, granulators, and coaters. Whether you need solid dosage technology for R&D, pilot or production applications, Fluid Air can help. MAGNAFLO fluid bed dryer/granulators and MAGNACOATER Wurster coaters are completely customizable fluid bed systems designed to provide superior performance for a range of solid dosage processing applications.

R&D Scale Models 0002, 0005

R&D or laboratory-scale units provide effective drying, coating or granulation for small batches. Ultrasonic option available. Click here to learn more.

Pilot Scale
Models 0020 - 0150

Pilot systems offer a wide range of options for processing larger batches intended for clinical trial or small-scale production.

Production Scale Models 0300 - 1200

Production scale fluid bed systems for processing of very large batches (up to 1200 Liters).


Unique Features


Conical Expansion Chamber

The conical shape of the expansion chamber reduces the velocity of the air in the filter chamber by 50%. The reduction in velocity helps to keep the smaller or fine particles out of the upper filter region and below the spray nozzles when granulating. A secondary benefit is a reduction in the total height of the expansion chamber.

Agitator System

The hydraulic agitator system located in the bottom of the bowl rotates slowly through the bed of material, ensuring proper fluidization of the product and eliminating the need to interrupt processing in order to manually rake the bed, break up clumps and close “blow holes.”

Spray/Liquid-Delivery System

In granulation systems with more than one spray nozzle, the nozzles are mounted in a “chandelier” pattern that spaces the nozzles out and points them straight down at the bed. Each nozzle has its own pump to ensure consistent and identical flow to all of the spray nozzles, ensuring higher operating efficiency and more uniform coverage of the fluidized bed.

Spiraflo Bed Plate

The spiraflo bed plate provides uniform distribution of the air across the bed plate eliminating channeling and non-uniform fluidization patterns. The plate is constructed of a sturdy, heavy gauge stainless steel to resist fraying and breakage, allowing a variety of tools to be used in product removal and cleanup.

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Process Filtration

Fluid Air offers a choice of filter systems for your application: standard filter bags, cartridges, or a combination of cartridges within a filter. Each option features our patented pulse filter cleaning technology.

One-Piece Bag The one-piece filter bag system extends from the bottom of the expansion chamber to the top, and can be shaken to remove any material. The filter protects the stainless steel chamber walls from product exposure, preventing product accumulation, lowering operating temperatures and reducing clean-up time.

Cartridges Cartridge filters are installed in the upper portion of the expansion chamber. The cartridges are automatically pulsed clean, permitting continuous fluidization of the material.

Bag/Cartridge Combination The one-piece bag/cartridge filter system combines the benefits of both filter systems.

Scale Up

Fluid Air fluid bed systems are designed to maintain critical scale-up factors from one unit to the next. Starting with our Model 50 to our largest available units, each system operates with nearly identical bed depths, air velocities, and air ratios (quantity of air per cubic foot of product), greatly simplifying the scale up of product from one unit to the next.


The system consists of a Turboflo or Conidur screen in the outer or down-bed portion of the plate. The inner or up-bed portion of the plate is a drop-in assembly comprised of two plates riding one on top of the other that function as an adjustable shutter. The shutter can be adjusted to proportion the amount of air going up through the inner and outer sections of the plate. With this system a multitude of products can be processed with one distributor plate system.

Multi-Partition Air Balancing System

The multi-partition air balancing system, located prior to the distributor plate assembly, balances the air flow going to each coating zone ensuring uniform fluidization in multi-partition systems.

Flared Partitions

The flared bottom partition has a standard upper diameter and a larger or flared bottom diameter. The larger bottom diameter means the product, once inside the partition, has further to travel before it reaches the spray nozzle. The longer travel distance ensures that the product is fluidized before it reaches the spray nozzle permitting operation at higher spray rates.