Typical System Layout Low Volume/High Velocity Typical System Layout Low Volume/High Velocity
Text Version

Typical System Layout Low Volume/High Velocity with Chart
Typical system shown with piping sizes of 2 1/8" for 7" - 72,000 rpm Disc sander(2 1/8"), 2  1/8" for chipping hammer (2 1/2"), 2  1/8" for 6" - 10,000 rpm Cup stone grinder (3"), 2 1/8" piping for 6" X 1", 10,000 rpm Wheel grinder (3 1/2"), and 2 1/8" piping for Swing Frame grinder( 2 1/2").  Fittings are in parentheses following each machine type.  All lines flow into 4" piping connected to primary separator, dust collector, with recommended automatic bag cleaner, and exhauster to atmosphere.
cfm I.D. Plastic Hose Size
Disk sanders 3-9 inch diameter 60-175 1 - 1.5
Vibratory Pad Sander - 4" X 9" 100 1.25
Router, 1/8" to 1" 80-100 1 - 1.25
Belt Sander, 3" - 4000 cfm 70 1
Pneumatic chisel 60 1
Radial Wheel Grinder 70 1
Surface Dye Grinder, 1/4" 60 1
Cone Wheel Grinder 90 1.25
Cup Stone Grinder, 4" 100 1.25
Cup Type Brush, 6" 150 1.5
Radial Wire Brush, 6" 90 1.25
Hand Wire Brush 3" X 7" 60 1
Rip Out Knife 175 1.5
Rip Out Cast Cutter 150 1.5
Saber Saw 120 1.5
Swing Frame Grinder 380 2.25
Saw Abrasive 3" 100 1.25


System Notes:
Bell and socket, smooth - flow type tubing and fittings should be used throughout the system. When system is used for vacuum cleaning of abrasive materials, schedule Nol40 pipe and cast iron drainage fittings, or heavier, should be used in place of tubing.

From American Conference of Governmental Industrial Hygienists (ACGIH®), Figure VS-40-20, Industrial Ventilation : A Manual of Recommended Practice, 23rd Edition. Copyright 1988. Reprinted with permission.