Grizzly G0443 Dust Collector User Manual


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

Determining Main Line Duct Size
Figure 41
395
395
614
790395
220
98
Dust
Collector
5" 6" 7"
Table Saw
Planer/
Moulder
Miter
Saw
Jointer Sander
PlanerShaper
Figure 42. 
395
395
614
790
395
220
98
4"
4"
4" 6"
4" 4" 5"
5" 6" 7"
Table Saw
Miter
Saw
Jointer Sander
PlanerShaper
Planer/
Moulder
Dust
Collector
The general rule of thumb for a main line duct is
that the velocity of the airflow must not fall below
3500 FPM.
For small/medium sized shops, using the inlet size
of the dust collector as the main line duct size
will usually keep the air velocity above 3500 FPM
and, depending on your system, will allow you to
keep multiple branches open at one time.
Mark your drawing, as shown in the figure below,
but using the inlet size for your dust collector as
the main line.



      



        

Note: Systems with powerful dust collectors work
better if multiple blast gates are left open. This
also allows you to run two machines at once.
Experiment with different combinations of blast
gates open/closed to find the best results for your
system.

Figure
        
Figure 
Determining Branch Line Duct Size
To Planer
Blast Gate
Flex Pipe
Rigid Pipe
Rigid Pipe
(Main Line)
Elbow
Clamp
Y Branch
Figure 43.
Drop Downs
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