Typical Values for FL and XT and Fd
- Last UpdatedAug 22, 2022
- 1 minute read
|
Valve |
FL |
XT |
Fd |
||
|---|---|---|---|---|---|
|
Type |
Trim |
Flow |
|||
|
Globe Valve Single Port |
Ported Plug |
Either |
0.9 |
0.75 |
1.0 |
|
Contoured Plug |
Open |
0.9 |
0.72 |
1.0 |
|
|
Close |
0.8 |
0.55 |
1.0 |
||
|
Characterised Cage |
Open |
0.9 |
0.75 |
1.0 |
|
|
Close |
0.85 |
0.70 |
1.0 |
||
|
Wing Guided |
Either |
0.9 |
0.75 |
1.0 |
|
|
Globe Valve Double Port |
Ported Plug |
Either |
0.9 |
0.75 |
0.7 |
|
Contoured Plug |
Either |
0.9 |
0.70 |
0.7 |
|
|
Wing Guided |
Either |
0.85 |
0.75 |
0.7 |
|
|
Rotary |
Eccentric Spherical Plug |
Open |
0.85 |
0.61 |
1.0 |
|
Close |
0.68 |
0.40 |
1.0 |
||
|
Angle Globe |
Contoured Plug |
Open |
0.9 |
0.72 |
1.0 |
|
Close |
0.8 |
0.65 |
1.0 |
||
|
Characterised Cage |
Open |
0.85 |
0.65 |
1.0 |
|
|
Close |
0.8 |
0.60 |
1.0 |
||
|
Venturi |
Close |
0.5 |
0.20 |
1.0 |
|
|
Ball Valves |
Segmented |
Open |
0.6 |
0.25 |
1.0 |
|
Reduced Bore |
Either |
0.55 |
0.15 |
1.0 |
|
|
Butterfly Valves |
60° aligned |
Either |
0.68 |
0.38 |
0.7 |
|
Fluted Vane |
Either |
0.70 |
0.41 |
0.7 |
|
|
90° Eccentric seat |
Either |
0.60 |
0.35 |
0.7 |
|
This table is a partial extract of Table D1 in the standard.