Data Sheet
V500 Valve
D100054X012
Product Bulletin
51.3:V500
May 2012
15
Coefficients
Table 12. Fisher V500, Forward Flow, Level 1, 2 and 3 Trims Full Port
Coefficients
Valve
Size,
NPS
Valve Rotation, Degrees
Modified Linear
Characteristic
10 20 30 40 50 60 70 80 90
C
v
1
1.22 2.89 5.05 7.63 9.94 11.3 11.8 12.0 12.2
K
v
1.06 2.50 4.37 6.60 8.60 9.77 10.2 10.4 10.6
F
d
0.49 0.64 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.89 0.89 0.88 0.85 0.85 0.85 0.85 0.85 0.85
X
T
0.480 0.497 0.508 0.548 0.597 0.632 0.636 0.612 0.593
C
v
1-1/2
2.07 6.15 11.5 16.6 20.7 23.5 25.3 26.1 26.6
K
v
1.79 5.32 9.95 14.4 17.9 20.3 21.9 22.6 23.0
F
d
0.48 0.63 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.95 0.85 0.85 0.84 0.84 0.84 0.84 0.84 0.84
X
T
0.770 0.476 0.483 0.555 0.616 0.636 0.632 0.601 0.589
C
v
2
4.11 8.73 16.7 27.0 37.2 43.4 45.8 46.2 46.2
K
v
3.56 7.55 14.4 23.4 32.2 37.5 39.6 40.0 40.0
F
d
0.49 0.63 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.97 0.92 0.84 0.79 0.77 0.75 0.75 0.74 0.74
X
T
0.439 0.442 0.442 0.422 0.422 0.462 0.452 0.442 0.442
C
v
3
8.80 22.7 43.3 71.3 96.8 116 130 138 142
K
v
7.61 19.6 37.5 61.7 83.7 100 112 119 123
F
d
0.46 0.62 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.86 0.84 0.83 0.83 0.83 0.82 0.78 0.77 0.77
X
T
0.469 0.544 0.574 0.526 0.497 0.526 0.508 0.476 0.456
C
v
4
16.6 41.3 79.1 123 166 203 230 247 255
K
v
14.3 35.7 68.4 106 144 176 199 214 221
F
d
0.45 0.61 0.72 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.85 0.82 0.81 0.81 0.80 0.79 0.77 0.76 0.76
X
T
0.439 0.555 0.501 0.466 0.473 0.490 0.480 0.459 0.442
C
v
6
17.5 79.1 155 270 363 434 492 540 565
K
v
15.1 68.4 134 234 314 375 426 467 489
F
d
0.44 0.60 0.72 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.97 0.93 0.88 0.82 0.76 0.73 0.72 0.71 0.71
X
T
0.879 0.585 0.540 0.456 0.439 0.432 0.436 0.426 0.416
C
v
8
51.5 146 298 481 646 775 879 981 1050
K
v
44.5 126 258 416 559 670 760 849 908
F
d
0.43 0.59 0.72 0.80 0.87 0.92 0.96 0.99 1.00
F
L
0.97 0.93 0.87 0.78 0.72 0.71 0.70 0.69 0.67
X
T
0.456 0.605 0.533 0.449 0.413 0.403 0.391 0.372 0.360