* represents approximate ISO standard minimum
Re
number limit
* represents approximate ISO standard minimum
Re
number limit
8631-10 13,500
95,200
107,100
117,900
122,900
127,700
134,600
8631-12 18,650
134,900
151,700
166,800
173,800
180,600
190,300
8631-14
22,140
160,200 180,100
198,000 206,400 214,400
225,900
8631-16
29,180
211,100 237,500
261,100
272,100
282,600
297,800
8631-18
37,200
269,200 302,700
332,800 346,800 360,300
379,600
8631-20
46,670
334,200 375,800
413,200
430,600 447,400
471,300
8631-22
56,730
406,300 456900
502,300
523,500 543,800
572,900
8631-24
67,780
485,400 545,800
600,100
625,400 649,700
684,500
8631-26
79,060
566100 636,700
700,000
729,500
757,800
798,400
8631-28
92,010
658,900 741,000
814,600
849,000 882,000
929,100
8631-30
105,900
758,600 853,200
938,000
977,500 1,016,000 1,070,000
8631-32
122,100
865,400 973,300 1,070,000 1,115,000 11,58,000 1,220,000
8631-34
138,200
979,300 1,101,000 1,211,000 1,262,000 1,311,000 1,381,000
8631-36
155,200 1,100,000 1,237,000 1,360,000 1,418,000 1,473,000 1,551,000
8631-38
173000 1,228,000 1,381,000 1,518,000 1,582,000 1,644,000 1,732,000
8631-40
192,300 1,363,000 1,533,000 1,685,000 1,756,000 1,824,000 1,922,000
M8631-250
362
2,550
2,869
3,158
3,292
3,421
3,605
M8631-300 500 3,614 4,064 4,469 4,656 4,838 5,098
M8631-350
593
4,292
4,825
5,305
5,530
5,744
6,052
M8631-400
782
5,656
6,363
6,995
7,290
7,571
7,978
M8631-450
997
7,212
8,110
8,916
9,291
9,653
10,170
M8631-500
1,250
8,954
10,068
11,070
11,536
11,986
12,627
M8631-550
1,520
10,885
12,241
13,457
14,025
14,569
15,349
M8631-600
1,816
13,004
14,623
16,077
16,755
17,406
18,338
M8631-650
2,118
15166
17,058
18,754
19,544
20,302
21,390
M8631-700
2,465
17,653
19,852
21,824
22,746
23,630
24,891
M8631-750
2,837
20,324 22,858
25,130
26,188
27,220
28,666
M8631-800
3,271
23,185
26,076
28,666
29,872
31,024
32,685
M8631-850
3,703
26,236 29,497
32,444
33,810
35123
36,998
M8631-900
4,158
29,470
33,140
36,436
37,990
39,463
41,553
M8631-950
4,635
32,899 36,998
40,669
42,383
44,044
46,402
M8631-1000
5152
36,516
41,071
45,143
47,045
48,867
51,492
Sizing Chart scfh air
(60°F; 14.696 psia;
S.G. 1.0) Class
150 ANSI Flanges
Sizing Chart Nm
3
/hr
air (0°C; 760mm Hg;
S.G. 1.0) PN 10 DIN
Flanges
8631 (nominal pipe siz
e inches)
8631 (nominal pipe siz
e mm)
Diff erential Pressure (In. w.c.)
Diff erential Pressure (mbar)
0.03*
0.075*
1.5
3.736
1.9
4.733
2.3
5.729
2.5
6.227
2.7
3
6.725
7.473
Capacity | 8631 Venturi
Bulletin 8631
page 6
