air flow table

We offer this and many other helpful guides as a service to our new and existing clients. Please be sure to check out our entire line of power tools from Production Products.












Click here for the complete air flow table on the volume of free air in C.F.M. that will flow thru round holes from a receiver into the atmosphere.  Cubic feet of air per minute measured at absolute pressure of 14.7 per sq. in. and 70°F.

The table is based on 100% coefficient of flow. For a well rounded entrance  multiply values by 0.97.   For sharp edged orifices a multiplier of 0.65 may be used.  This table will five approximate results only.

The formula Q = 14.5 PD2,
where Q is C.F.M., P is absolute pressure and D is orifice diameter in inches, may be used for any points not given in table.  (Applies only above 15 pounds gauge.)

 
Dia. of
Orifice
(in)

GAUGE PRESSURE IN RECEIVER - POUNDS
2 5 10 15 20 25 30 35 40 45 50 60 70 80 90 100 125 150 200
1/64 .04 .062 .077 .105 .123 .140 .158 .176 .194 .211 .229 .267 .300 .335 .370 .406 .494 .583 0.75
1/32 .158 .248 .311 .420 .491 .562 .633 .703 .774 .845 .916 1.06 1.20 1.34 1.48 1.62 1.98 2.32 3.18
3/64 .356 .568 .712 .944 1.10 1.26 1.42 1.58 1.75 1.91 2.06 2.38 2.70 3.0 3.33 3.66 4.44 5.25 6.86
1/16 .633 .993 1.24 1.68 1.96 2.25 2.53 2.81 3.10 3.38 3.66 4.23 4.79 5.36 5.92 6.49 7.90 9.31 12.17
3/32 1.43 2.23 2.80 3.78 4.41 5.05 5.69 6.31 7 7.63 8.25 9.5 10.8 12.0 13.3 14.6 17.8 20.9 27.35
clear.gif (856 bytes)                                      
1/8 2.53 3.97 4.98 6.72 7.86 8.98 10.1 11.3 12.4 13.5 14.7 16.9 19.2 21.4 23.7 26 31.6 37.3 48.7
3/16 5.7 8.93 11.2 15.2 17.65 20.2 22.8 25.2 28 30.5 33 38 43.2 48.3 53.2 58.5 71.0 84.0 109.6
1/4 10.1 15.9 19.9 26.9 31.4 35.9 40.5 45 49.6 54.1 58.6 67.6 76.7 85.7 94.8 104 126 149.3 195
3/8 22.8 35.7 44.7 60.5 70.7 80.9 91.1 101 112 122 132 152 173 193 213 234 284 336 438
1/2 40.5 63.5 79.6 108 126 144 162 180 198 216 235 271 307 343 379 415 506 596 777
clear.gif (856 bytes)                                      
5/8 63.3 99.3 124.5 168 196 225 253 281 310 338 366 423 479 536 592 649 790 932 1216
3/4 91.2 143 179.2 242 283 323 365 405 446 487 528 609 690 771 583 934 1138 1340 1750
7/8 124 195 244.2 329 385 440 496 551 607 662 718 828 939 1050 1161 1272 1549 1825 2382
1 162 254 318.2 430 503 575 648 720 793 865 938 1227 1227 1371 1516 1661 2023 2385 3112
1 1/8 205 321 402.5 544 637 727 820 910 1004 1094 1187 1552 1552 1734 1918 2101 2560 3020 3940
clear.gif (856 bytes)                                      
1 1/4 253 397 498 672 784 900 1019 1124 1240 1352 1464 1917 1917 2144 2370 2596 3160 3725 4860
1 3/8 307 482 604 816 954 1091 1230 1367 1505 1643 1780 2330 2330 2607 2880 3153 3840 4525 5910
1 1/2 364 572 716 968 1132 1293 1460 1620 1783 1946 2112 2760 2760 3081 3412 3734 4550 5360 7000
1 3/4 496 780 972 1318 1540 1760 1985 2205 2429 2650 2875 3755 3755 4200 4645 5085 6195 7300 9530
2 648 1015 1274 1720 2120 2300 2594 2880 3173 3460 3752 4915 4915 5480 6070 6070 8100 9540 12450


top

Guides / ChartsProductsServiceSpecials
HomeFeedback

Production Products, Inc.
9124 Cody
Overland Park, KS 66214-1732
(913) 492-3033 FAX: 3035
info@productionproducts.com

site by web_mstr.gif (3163 bytes)
webmaster email