Capacities | Metering Orifice
8694A FLANGED ORIFICE METER CAPACITY TABLE (SCFH)
Pressure drop across orifice plate ("w.c.)
Pipe size Plate No.
11
12
13
14
15
16
17
8
9
20
9
270 324 387 468 558 675 810 915 468 558 675 810
490 580 700 850 1010 1220 1460 1650
510 610 730 880 1050 1270 1530 1730
530 630 760 920
550 660 790 950 1140 1380 1650 1860
570 680 820 990 1180 1430 1740 1930
590 700
610 730 870
620 750
640 770 920 1110
660 790 940 1140
840 1020 1220 1470 1760 1990
900 1080 1290 1560 1870 2110
1"
1050 1250 1520 1820 2050
1100 1330 1590 1800
133
1360 1650 1970 2230 1140 1360 1650 1970 2370 2830 3410 4600 1650 1970 2370 2830 3410 4070 4870 7240
1600 1920 2170
850 1010 1220 1460 1750 2100 2530 3410 1220 1460 1750 2100 2530 3020 3610 5370
880 1050 1270 1530 1830 2190 2640 3560 1270 1530 1830 2190 2640 3150 3770 5600
920 1100 1330 1590 1910 2280 2750 3710 1330 1590 1910 2280 2750 3280 3930 5830
950 1140 1380 1650 1980 2360 2850 3850 1380 1650 1980 2360 2850 3400 4070 6050
990 1180 1430 1710 2050 2450 2960 3990 1430 1710 2050 2450 2960 3520 4220 6270
1020 1220 1470 1760 2120 2530 3050 4120 1470 1760 2120 2530 3050 3640 4360 6470
1050 1250 1520 1820 2180 2610 3150 4240 1520 1820 2180 2610 3150 3750 4490 6670
1080 1290 1560 1870 2240 2680 3240 4370 1560 1870 2240 2680 3240 3860 4620 6860
1110
1330 1600 1920 2310 2750 3330 4490 1600 1920 2310 2750 3330 3970 4750 7050
1-1/4"
972 1160 1400 1890 675 810 972 1160 1400 1670 2000 2970
1-1/2"
Bulletin 8694A Page 6
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