Data Sheet
GX Control Valve and Actuator
D103171X012
Product Bulletin
51.1:GX
March 2012
29
Table 24. Fisher GX, Equal Percentage Valve Plug, Flow Up Through the Port (continued)
Equal Percentage - Flow Up
Equal Percentage
Characteristic
Valve
Size
Port
Diameter
Maximum
Travel
Flow
Coeffi-
cient
Valve Opening–Percent of Total Travel
F
L
(1)
mm mm 10 20 30 40 50 60 70 80 90 100
DN 80
(NPS 3)
70 40
C
v
2.38 6.92 11.5 16.4 22.4 31.9 46.5 63.6 80.6 95.1 0.94
K
v
2.06 5.99 9.95 14.2 19.4 27.6 40.2 55.0 69.7 82.3
---
X
T
0.83 0.81 0.85 0.83 0.80 0.76 0.72 0.75 0.77 0.80 ---
F
d
0.82 0.50 0.53 0.53 0.47 0.42 0.40 0.40 0.43 0.45 ---
70
(3)
20
C
v
2.71 4.63 7.60 11.3 17.1 23.7 35.3 50.4 61.6 75.7 0.89
K
v
2.34 4.00 6.57 9.79 14.7 20.5 30.5 43.6 53.3 65.5
---
X
T
0.54 0.50 0.49 0.51 0.51 0.57 0.51 0.50 0.64 0.68 ---
F
d
0.06 0.07 0.10 0.12 0.15 0.18 0.22 0.26 0.30 0.34 ---
46 20
C
v
0.873 1.66 3.41 5.66 8.75 13.8 20.7 30.5 37.1 43.7 0.97
K
v
0.755 1.44 2.95 4.90 7.57 11.9 17.9 26.4 32.1 37.8
---
X
T
0.75 0.82 0.75 0.82 0.77 0.73 0.78 0.70 0.85 0.88 ---
F
d
0.70 0.84 0.47 0.48 0.40 0.36 0.37 0.40 0.43 0.45 ---
36 20
C
v
1.08 2.01 2.80 4.26 6.31 8.38 11.6 17.2 23.1 28.6 0.96
K
v
0.934 1.74 2.42 3.68 5.46 7.25 10.0 14.9 20.0 24.7
---
X
T
0.84 0.86 0.88 0.84 0.83 0.88 0.79 0.72 0.76 0.85 ---
F
d
0.64 0.80 0.87 0.54 0.55 0.50 0.41 0.40 0.43 0.45 ---
DN 100
(NPS 4)
90 40
C
v
5.56 13.6 21.1 29.1 40.8 55.8 77.5 117 145 165 0.90
K
v
4.81 11.7 18.3 25.1 35.3 48.3 67.0 101 126 143
---
X
T
0.93 0.93 0.94 0.90 0.85 0.82 0.82 0.75 0.78 0.80 ---
F
d
0.39 0.49 0.52 0.48 0.45 0.44 0.33 0.36 0.39 0.41 ---
90
(3)
20
C
v
5.88 9.43 13.1 17.5 27.3 42.4 63.4 85.5 107 128 0.87
K
v
5.09 8.16 11.3 15.1 23.6 36.7 54.8 74.0 92.6 111
---
X
T
0.55 0.54 0.54 0.55 0.43 0.52 0.57 0.58 0.63 0.67 ---
F
d
0.07 0.08 0.10 0.11 0.13 0.18 0.22 0.26 0.30 0.34 ---
90
(4)
20
C
v
2.38 3.65 5.64 8.42 12.0 17.4 24.8 36.7 53.0 68.5 0.90
K
v
2.06 3.16 4.88 7.28 10.4 15.1 21.5 31.7 45.8 59.3
---
X
T
0.68 0.61 0.57 0.55 0.55 0.55 0.56 0.48 0.50 0.58 ---
F
d
0.04 0.05 0.06 0.08 0.09 0.11 0.14 0.16 0.20 0.24 ---
70 40
C
v
2.04 5.78 10.6 15.3 20.8 29.8 43.3 61.9 80.6 97.7 0.92
K
v
1.76 5.00 9.17 13.2 18.0 25.8 37.5 53.5 69.7 84.5
---
X
T
0.79 0.83 0.85 0.85 0.82 0.77 0.73 0.73 0.75 0.76 ---
F
d
0.82 0.50 0.53 0.53 0.47 0.42 0.40 0.40 0.43 0.45 ---
46 20
C
v
1.02 1.76 3.58 5.76 8.85 14.1 21.4 30.6 37.9 44.0 0.94
K
v
0.88 1.52 3.10 4.98 7.66 12.2 18.5 26.5 32.8 38.1
---
X
T
0.69 0.77 0.68 0.81 0.76 0.71 0.72 0.67 0.75 0.79 ---
F
d
0.70 0.84 0.47 0.48 0.40 0.36 0.37 0.40 0.43 0.45 ---
1. At 100% travel.
2. Restricted trim.
3. Balanced trim.
4. Balanced, restricted trim.
-continued-