FLAT LINE FINISHING SYSTEMS
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We can produce most any size filter for flat line and linear machines. 
Contact us for size availability and custom part number.
The Working Principle of Andreae Filters is INERTIA SEPARATION.

Principle
Separation by inertia is the working principle of the Andreae Filter.  The airflow, loaded with paint particles (overspray), suffers several radical changes in direction.  The paint particles, heavier than air, follow tangent trajectories to the airflow.  Therefore, the paint particles accumulate in the holding pockets and the airflow leaves the filter virtually free of overspray.





Common and not so common sizes:

9.5" x 2'
14" x 30'
16.875" x 5.3'
17.625" x 5'
18" x 6'
19.625" x 26'
19.69" x 6.5'
19.75" x 5'
19.75" x 6'
19.75" x 9'
22" x 5.6'
22.25" x 5.75'
22.5" x 5.75'
23" x 6'
24.25" x 2.5'
25" x 1.875'
26.75" x 3.5'
27" x 2'


INSTALLATION
digital flip book
WORTHY OF IMITATION
ADVANTAGES

NO MIGRATION
The migration phenomenon is common when slow-drying coatings are used with mesh filters.  The airflow will pull out particles already trapped in the mesh.  Consequently, the particles already deposited will again be airborne and migrate through the system. 
With the Andreae Filter, the paint particles are deposited in the holding pocket, a dead end, outside of the air stream.

PRODUCT WEIGHTS
pdf 3.4mb
front wall
paint deposit
paint laden airflow
Airflow
back wall
HIGH HOLDING CAPACITY
With separation by inertia, the captured overspray is deposited outside of the airflow into holding pockets.  The bigger the pocket, the better holding capacity of the filter. 

The Andreae Filter has 2.5" deep holding pockets, giving the Andreae Filter a holding capacity up to 6 times higher than common mesh filters.

STABLE STATIC PRESSURE
Static pressure increases slowly with the accumulation of particles.  This has two advantages:  the finisher stays in an environment of clean air and the airflow around the parts to be coated stays uniform. 
Yours did not come with an Andreae Filter?
No problem!  With minimum modification, you can fit an Andreae Filter in your flat line or lineal machine.  Simply install a grid panel and clips on either end... you are good for go!
AIRFLOW SPEED IN BOOTH
STANDARD
HIGH EFFICIENCY
100 fpm (0.50 m/s)
0.05 in wc (12 Pa)
0.10 in wc (25 Pa)
150 fpm (0.75 m/s)
0.12 in wc (30 Pa)
0.15 in wc (37 Pa)
200 fpm (1.00 m/s)
0.22 in wc (55 Pa)
0.25 in wc (62 Pa)
Andreae High Efficiency Filters may not be available in very small sizes.  If you require two stage filtration, we may recommend a deconstructed version to achieve the desired efficiency.
Grid panel: could bend end row up to form a tray.  Allow 1/8" between tray end and exhaust opening.  Tuck end filter pleat over lip of tray end. 
An example of an end clip.  See channel frame instructions for more clip information.  Note the grid panel behind the 3 stages.
*average readings of the static pressure gauge with a clean filter
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Worthy of Imitation!