PNEUMATIC CONVEYING QUICK SIZING GUIDELINES

NOTE: To provide ballpark sizing information we assume the following system parameters:

SYSTEM LAYOUT: 200 Ft. Horizontal, 50 Ft. Vertical, Four 90 Degree Elbows

MATERIAL DENSITY: 40 Pounds per Cubic Foot (PCF)

A PRESSURE DILUTE PHASE CONVEYING SYSTEM WITH
A DUROFLOW POSITIVE DISPLACEMENT BLOWER OPERATING AT 9 PSIG.

Line Size CFM Required Possible Conveying Rate HP RQD.

2" 100-150 3,000 LB/HR ~7-1/2
3" 250-300 11,000 LB/HR ~15
4" 450-550 29,000 LB/HR ~ 30
5" 700-840 36,000 LB/HR ~ 40
6" 1000-1200 50,000 LB/HR ~ 60
8" 1750-2100 80,000 LB/HR ~100
10" 2750-3300 120,000 LB/HR ~150

RULE OF THUMB: HP = (CFM X PSI) / 172 SQ. FT. Pipe Area = (LB/MIN x 2 CFM/LB) / 5000 FPM

DISCLAIMER:

While these guidelines are conservative they should be used as rough estimations only in the conceptual stage of a project. Please contact us for exact sizing of your system and for testing of your material in our pneumatic conveying lab. Dense phase pneumatic conveying is also available - please contact us to discuss. 1-888-9-CONVEY