 |
Flow velocity in
control valves
|
|
It is recommended that the
maximum inlet flow velocities applied to control valves should be as shown in
the tables below.
|
| Globe Valves Size
|
Liquid |
Steam or Gas |
| mm |
inch |
m/s |
ft/s |
m/s |
ft/s |
| 15 - 25 |
1/2 - 1 |
9 |
30 |
120 |
400 |
| 40 - 50 |
1 1/2 - 2 |
7.5 |
25 |
90 |
300 |
| 65 - 100 |
2 1/2 - 4 |
6 |
20 |
75 |
250 |
| 150 - 200 |
6 - 8 |
6 |
20 |
70 |
225 |
| 250 - 400 |
10 - 16 |
4.5 |
15 |
55 |
175 |
| Angle Valves Size
|
Liquid |
Steam or Gas |
| mm |
inch |
m/s |
ft/s |
m/s |
ft/s |
| 15 - 25 |
1/2 - 1 |
13.5 |
45 |
135 |
450 |
| 40 - 50 |
1 1/2 - 2 |
12 |
40 |
105 |
350 |
| 65 - 100 |
2 1/2 - 4 |
10.5 |
35 |
90 |
300 |
| 150 - 200 |
6 - 8 |
9 |
30 |
85 |
275 |
| 250 - 400 |
10 - 16 |
7.5 |
25 |
70 |
225 |
© 2007 Lars Josefsson
Steam esteem in a computerized world