2010 Product Catalog— Dust & Fume Collection
— Industrial Ventilation
— In Stock, Ready to Ship
— Ductwork Direct
— From the Manufacturer
Designing Your Dust Collection System
There are five simple steps to designing an effective and efficient dust collection system.
Draw a floor plan of your shop
Determine Duct Velocity (FPM)
Determine Diameter and CFM of each Branch
Determine Diameter and CFM of Main Duct
Figure System Resistance (SP - Static Pressure)
We ALWAYS recommended you do these calculations
BEFORE you purchase your dust collector or ductwork.
To properly size your dust collector, you NEED to know
your CFM requirements and at what Static Pressure your
system will be operating. Use the CFM and Static Pres-
sure to compare the performance of your dust collector.
The dust collector performance ratings should show that at your given Static Pressure, the CFM it
The first step in designing your system is to draw a floor plan of your shop area
including the following (see example, page 13):
Location of dust producing machines, indicate size & location of dust pick-ups on each
machine. Remember - Machines with the biggest draw (highest CFM) should be placed
nearest to the dust collector.
Desired location of dust collector unit.
Floor to joist measurement.
Any obstructions that would interfere with the run of the duct.
Shop anytime www.airhand.com
CFM - Air Volume in cubic feet per minute.
FPM - Velocity of Air in feet per minute.
Static Pressure. This is expressed in
inches water gauge. It is resistance to air
at rest in a duct, and is also commonly
called “resistance,” friction,” “friction loss”
or “pressure loss”.
Velocity Pressure: expressed in inches
water gauge. It is kinetic pressure in the
direction of flow necessary to cause air
at rest to flow at a given velocity.
Important Terms to Remember
Machines with the