Capacities | Metering Orifice
8694A FLANGED ORIFICE METER CAPACITY TABLE (SCFH)
Pressure drop across orifice plate ("w.c.)
Pipe size Plate No.
1
2
3
4
5
6
7
8
9
10
675 810 972 1160
368 441 529 632 763 910
520 620 750 890 1080 1290 1540
640 760 920
740 880 1060 1260 1530 1820 2180 3240 1060 1260 1530 1820 2180 2610 3140 5240 1530 1820 2180 2610 3140 3760 4520 7940 2610 3140 3760 4520 5410 6540 7840 13020
820 990 1180 1410 1710
900 1080 1300 1550 1870 2230 2670 3960 1300 1550 1870 2230 2670 3200 3840 6420 1870 2230 2670 3200 3840 4600 5540 9720 3200 3840 4600 5540 6630 8000 9610 15940
970 1170
1040 1250 1500 1790 2160 2570 3080 4580 1500 1790 2160 2570 3080 3700 4440 7410 2160 2570 3080 3700 4440 5310 6400 11230 3700 4440 5310 6400 7660 9240 11090
1100 1320 1590 1900 2290 2730 3270 4850 1590 1900 2290 2730 3270 3920 4710 7860 2290 2730 3270 3920 4710 5640 6780 11910 3920 4710 5640 6780 8120 9800 11770
1160 1390 1670 2000 2410 2880 3440 5120 1670 2000 2410 2880 3440 4130 4960 8290 2410 2880 3440 4130 4960 5940
1400 1670 2020 2410 2880 4280 1400 1670 2020 2410 3880 3460 4150 6930 2020 2410 2880 3460 4150 4970 5980 10500 3460 4150 4970 5980 7160 8650 10380 17220
1090 1320 1580 1890
1-1/2"
1400 1670 2000 2970 972 1160 1400 1670 2000 2400 2880 4810 1400 1670 2000 2400 2880 3450 4150 7286 2400 2880 3450 4150 4970 6000 7200 11950
2030 2440 3620
1089 1618
2290 2800
529 632 763 910
750 890 1080 1290 1540 1850 2220 3710
920
1180 1410 1710
1090 1320 1580 1890 2260 2720 4540
2030 2440 2920 3510 5860
2"
1089 1307 1569 2620
763 910
1080 1290
1320 1580
1710
2030 2440 2920 3510 4200 5060 8870 2920 3510 4200 5060 6050 7310 8770 14550
1089 1307 1569 1879 2261 3969 1307 1569 1879 2261 2707 3268 3922 6509
1540 4890
1850 2220
2260 2720
2-1/2"
2660 3250 3200 3920
7150
5610
6870
12550
1850 2220
2260 2720
4130 4960 5940 7150
2660 3250 3200 3920 3830 4690 4620 5660 5550 6790
3"
8560 10330 12400 20580
9210
11270
18410 19530
Bulletin 8694A Page 7
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