Vacuum pump
Technical specifications
C.F.M. needed for conveying material at different speed for deferent size of hose
| | | | C.F.M. needed to reach velocity | | | | Hose
diameter | | 4000 ft/min | | 4500 ft/min | | 5000 ft/min | | 5500 ft/min | | 6000 ft/min | | 6500 ft/min | | 7000 ft/min | | 13780 ft/min
very high velocity
| | | | ø2" | | 87 | | 98 | | 109 | | 120 | | 130 | | 141 | | 152 | | 300 | | | | ø3" | | 196 | | 221 | | 245 | | 270 | | 294 | | 318 | | 343 | | 676 | | | | ø4" | | 349 | | 393 | | 436 | | 480 | | 523 | | 566 | | 610 | | 1202 | | | | ø5" | | 546 | | 614 | | 682 | | 750 | | 818 | | 886 | | 954 | | 1879 | | | | | | ø6" | | 786 | | 884 | | 982 | | 1080 | | 1178 | | 1276 | | 1374 | | 2706 | | | | ø8" | | 1396 | | 1571 | | 1745 | | 1920 | | 2094 | | 2268 | | 2443 | | 4810 | | | | ø10" | | 2181 | | 2454 | | 2727 | | 2999 | | 3272 | | 3544 | | 3817 | | 7515 | | | | ø12" | | 3142 | | 3534 | | 3927 | | 4320 | | 4712 | | 5105 | | 5497 | | 10823 | |
Hose equivalent
0.196 ft² ø6" = 2 x ø4" = 4 x ø3" = 7 x ø2"
0.087 ft² ø4" = 1 x ø3" and 1 x ø2" = 3 x ø2"
0.049 ft² ø3" = 2 x ø2"
0.029 ft² ø2"
Conveying speed
The speed needed for conveying material may vary depending on many factors; density, particle size and shape, susceptibility to moisture... . The following table shows only the average speed needed for an average type of the material.
| | | Material | | | ft/min | | | Material | | | ft/min | | | | | alumina | | | 5000 | | | cotton | | | 3800 | | | | | oats | | | 4500 | | | paper cut | | | 5000 | | | | | | | bakelite (powder) | | | 3800 | | | flour, wheat | | | 3800 | | | | | wheat | | | 6000 | | | smoke (ash) | | | 2000 | | | | | wood (piece) | | | 5800 | | | cotton seed | | | 5000 | | | | | wood (fiber) | | | 5500 | | | wool | | | 5000 | | | | | | | wood (chips) | | | 4500 | | | corn | | | 5500 | | | | | wood (dust) | | | 4000 | | | barley | | | 5800 | | | | | sawdust (dry) | | | 3800 | | | pulp (dry) | | | 4500 | | | | | sawdust (wet) | | | 4500 | | | casting dust (foundry) | | | 4500 | | | | | | | rubber (powder) | | | 4500 | | | granite dust | | | 6000 | | | | | coal dust | | | 4500 | | | metal dust | | | 4200 | | | | | cement (powder) | | | 7000 | | | sand | | | 7000 | | | | | shaving of wood | | | 4500 | | | rye | | | 6000 | | | | | | | bark (dry) | | | 4000 | | | salt | | | 6500 | | | | | bark (wet)
| | | 4500 | | | sugar | | | 6000 | |
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See also
Commercial fairs
January 09 2012
Come to meet us has the exhibition of Indianapolis of 28 february on March 1st, 2012 http://www.pumpershow.com/
January 09 2012
Municipal AORS trade show
Owen Sound, Ontario, Canada
June 6th and 7th, 2012
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