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Annular Velocity Calculator
Enter your data here »
Hole Size
(inches):
Pipe Size
(inches):
Hole Size
(inches)
12.25
Pipe Size
(inches)
4.5
Hole Size
(inches)
8.5
Pipe Size
(inches)
4.5
Hole Size
(inches)
7.5
Pipe Size
(inches)
4.5
Hole Size
(inches)
6
Pipe Size
(inches)
3.5
Hole Size
(inches)
5
Pipe Size
(inches)
3.5
Flow Rate US GPM
Flow Rate MP GPM
Flow Rate Ltr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
Ann Vel
Ft/min
Ann Vel
Mtr/min
50
41.64
189
9
2.9
24
7.2
34
10.4
52
15.7
96
29.3
75
62.46
284
14
4.3
35
10.8
51
15.5
77
23.6
144
43.9
100
83.28
379
19
5.7
47
14.3
68
20.7
103
31.4
192
58.5
125
104.10
473
24
7.2
59
17.9
85
25.9
129
39.3
240
73.1
150
124.92
568
28
8.6
71
21.5
102
31.1
155
47.1
288
87.8
200
166.56
757
38
11.5
94
28.7
136
41.5
206
62.8
225
187.38
852
42
12.9
106
32.3
153
46.6
232
70.7
240.5
200.28
910
45
13.8
113
34.5
164
49.8
248
75.6
275
229.02
1041
52
15.8
129
39.5
187
57.0
283
86.4
300
249.83
1136
57
17.2
141
43.0
204
62.2
400
333.11
1514
75
23.0
188
57.4
272
82.9
500
416.39
1893
94
28.7
235
71.7
600
499.67
2271
113
34.5
282
86.1
700
582.95
2650
132
40.2
800
666.23
3028
151
46.0
900
749.50
3407
170
51.7
1000
832.78
3785
189
57.5
1100
916.06
4164
207
63.2
1200
999.34
4542
226
69.0
1300
1082.62
4921
245
74.7
1400
1165.90
5299
264
80.5
1500
1249.17
5678