Bulletin 8699 Page 3
2 1⁄8
for 8699-5 for 8699-6 for 8699-7
2 5⁄8
3 3⁄16
A –fpt
C max.
C max.
B
A –fpt
D –orifice drill
B
D –orifice bore
8699-01 thru -4 (threaded union)
BALANCING ORIFICE NO. 8699
8699-5 thru -7 (flanged union)
BALANCING ORIFICE NO. 8699
TABLE 1: natural gas flow rates, cfh pressure drop across orifice
dimensions in inches
wt,
A
B
C
D
6 osi
8 osi
12 osi
16 osi ‡
lb
*
8699-01-0
1 ¾ 1 ¾ 1 ¾ 1 ¾
1 ¾ 1 ¾ 1 ¾ 1 ¾
½ ½ ½ ½ ¾ ¾ ¾
-01-073 -01-213 -01-257
0.073 0.213 0.257
179 256
207 296
254 361
293 418
½
*
8699-0-0
2 3⁄16 2 3⁄16 2 3⁄16 2 3⁄16 2 3⁄16 2 3⁄16 2 ½ 2 ½ 2 ½ 2 ¾ 2 ¾ 2 ¾
2 3⁄16 2 3⁄16 2 3⁄16 2 7⁄16 2 7⁄16 2 7⁄16
-0-295 -0-343
0.295 0.343
347 475
400 548
489 670
564 776
3 /
4
*
8699-1-0
1 1 1
-1-397 -1-453
0.397 0.453
615
710
870
1 001 1 351
1
830
960
1 168
*
8699-2-0
1 ¼ 1 ¼ 1 ¼ 1 ½ 1 ½ 1 ½
3 3 3
-2-500 -2-562
0.500 0.562
961
1 110
1 357 1 734
1 570 2 010
1 ½
1 230
1 420
*
8699-3-0
3 3⁄8 3 3⁄8 2 3⁄8
-3-625 -3-687
0.625 0.687
1 553 1 862
1 793 2 155
2 290 2 639
2 537 3 042
2 ¼
*
8699-4-0
2 2 2
3 1⁄8 3 1⁄8 3 1⁄8
4 4 4
-4-781 -4-875
0.781 0.875
2 310 2 985
2 665 3 445
3 264 4 220
3 770 4 870
3 ¼
*
8699-5-0
2 ½ 2 ½ 2 ½
3 3⁄16 3 3⁄16 3 3⁄16 3 ½ 3 ½ 3 ½
6 3⁄8 6 3⁄8 6 3⁄8 7 1⁄16 7 1⁄16 7 1⁄16 8 1⁄8 8 1⁄8 8 1⁄8
-5-968 -5-1125
0.968
3 575 5 149
4 130 5 950
5 050 7 270
5 840 8 400
4
1.125
*
8699-6-0
3 3 3 4 4 4
-6-1234 -6-1359
1.234 1.359
5 825 7 275
6 730 8 400
8 220 10 030
9 525 11 880
11
*
8699-7-0
4 4 4
-7-1547 -7-1688
1.547 1.688
8 941 11 020
10 330 12 730
12 620 15 560
14 600 18 000
19 ¾
Flow factors for other gases.
* Blank plate--hole to be machined by others. See note on front. ‡ For higher pressure drops, see information under "Selection" on front.
gas gravity
0.4 1.22
0.6 0.8
1.0
1.5
2.0
multiplier
1.0
0.87 0.77 0.63 0.55
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
Made with FlippingBook flipbook maker