Capacities | Metering Orifice
8694A FLANGED ORIFICE METER CAPACITY TABLE (SCFH OF NATURAL GAS)
15.696 psia inlet pressure; 60 °F inlet temperature (1082 mbar inlet pressure; 15.6 °C inlet temperature)
Pressure drop across orifice plate ("w.c.)
Pipe size Plate No.
11
12
13
14
15
16
17
18
19
20
9
270 324 387 468 558 675 810 915 468 558 675 810
590 640 760 930
620 670 800 970 1140 1350 1670 1900
640 700 830 1010 1190 1410 1740 1980
670 730
690 750 890 1080 1280 1510 1870 2130
710 780 920 1120 1320 1560 1930 2190
730 800 950 1150
750 820 980 1190
780 850
800 870 1030 1250 1480 1740 2160 2450 1380 1480 1790 2160 2540 3000 3720 5540
860 1050 1240 1460 1810 2050
1000 1220 1440 1700 2110 2390
1"
1100 1290 1600 1820
1360 1610 1990 2260
1400 1650 2050 2330
1020 11100 1330 1600 1880 2230 2760
1070 1150 1390 1670 1970 2330 2880 4290 1470 1660 2010 2410 2840 3340 4160 6030 2440 2450 2840 3460
1110 1190 1450 1740 2050 2420 3000 4470 1520 1730 2090 2510 2950 3480 4330 6270 2540 2550 2960 3600 1280 5030 6060
1150 1240 1500 1800 2130 2510 3120 4640 1580 1800 2170 2600 3060 3610 4490 6510 2630 2650 3070 3730 4440 5220 6290
1190 1280 1550 1870 2200 2600 3220 4800 1640 1860 2240 2690 3170 3730 4650 6740 2720 2740 3170 3860 4590 4500 6510 11250
1230 1330 1600 1930 2270 2690 3330 4960 1690 1920 2320 2780 3270 3860 4800 6960 2810 2830 3280 3990 4740 5580 6720 11620
1270 1370 1650 1990 2340 2770 3430
1310 1410
1340 1440 1750 2100 2480 2930 3630 5400 1840 2090 2520 3030 3570 4200 5240 7590 3070 3090 3570 4350
1700 2050 2410 2850 3530 5260 1790 2040 2460 2950 3470 4090 5100 7380 2980 3000 3480 4230 5030 5920 7130 12330
1-1/4"
972 1160 1400 1890 675 810 972 1160 1400 1670 2000 2970 972 1160 1400 1670 2000 2400 2880 4810
4110
5110
1400 1590 1920 2310 2720 3200 3980 5770 2330 2350 2720 3310 3930 4630 5570
1740 1980 2390 2870 3380 3980 4950 7180 2900 2920 3380
1890 2150 2590
3110
1-1/2"
3660 4310 5370 7780 3150 3170 3670 4460 5300 6240 7510
4110
2"
4110
4890 5750 6930 11980
5170
4830 5820
6080 7320
9640 10060
10470 10870
12660 12990
Bulletin 8694A Page 6
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