Static Pressure Calculator

Calculate total static pressure for dust collection systems based on duct length, fittings, and components.

System Components

Main Duct Length (feet)

Duct Diameter (inches)

System CFM

Fittings & Components

90° Elbows ~2.5" SP each

45° Elbows ~1.2" SP each

Y-Branches ~1.5" SP each

Blast Gates ~0.5" SP each (open)

Filter Type

Static Pressure Results

Enter system parameters to calculate total static pressure.

Understanding Static Pressure

What is Static Pressure?

Static pressure (SP) measures resistance to airflow in your dust collection system.

Measured in inches of water column (")
Higher SP = more resistance
Collector must overcome total SP

Pressure Loss Sources

Duct friction: ~0.5-1" per 100 ft
90° elbows: ~2.5" each
45° elbows: ~1.2" each
Y-branches: ~1.5" each
Filters: 1-3" depending on type

Collector Selection

Match CFM at calculated SP
Check manufacturer curves
Add 20% safety margin
Higher SP needs more HP

Reducing Pressure

Use larger diameter ducts
Minimize elbows and bends
Use 45° instead of 90° bends
Keep duct runs short
Clean filters regularly