Data Sheet
V500 Valve
D100054X012
Product Bulletin
51.3:V500
May 2012
18
Table 15. Fisher V500, Reverse Flow, Level 1, 2, and 3 Reduced P ort
Coefficients
Valve
Size,
NPS
Valve Rotation, Degrees
Modified Linear
Characteristic
10 20 30 40 50 60 70 80 90
C
v
1
.634 2.09 3.34 3.96 5.21 5.64 5.70 5.71 5.76
K
v
.548 1.81 2.89 3.43 4.51 4.88 4.93 4.94 4.98
F
d
(1)
0.54 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70 0.70
X
T
0.230 0.216 0.207 0.406 0.366 0.348 0.339 0.345 0.342
C
v
1-1/2
.464 1.93 4.21 7.81 11.0 12.1 12.1 12.2 12.2
K
v
.401 1.67 3.64 6.76 9.52 10.5 10.5 10.6 10.6
F
d
(1)
0.53 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.93 0.93 0.75 0.72 0.70 0.70 0.70 0.70 0.70
X
T
0.970 0.416 0.501 0.467 0.416 0.416 0.416 0.413 0.416
C
v
2
.965 2.68 4.82 12.0 17.7 18.7 18.8 18.9 18.9
K
v
.835 2.31 4.17 10.4 15.3 16.2 16.3 16.3 16.3
F
d
(1)
0.54 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.96 0.96 0.77 0.67 0.62 0.62 0.62 0.62 0.62
X
T
0.518 0.508 0.559 0.354 0.351 0.360 0.357 0.354 0.354
C
v
3
5.95 10.6 14.7 29.9 49.0 56.0 56.2 56.2 56.7
K
v
5.15 9.17 12.7 25.9 42.4 48.4 48.6 48.6 49.0
F
d
(1)
0.53 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.80 0.79 0.73 0.64 0.59 0.58 0.58 0.58 0.58
X
T
0.429 0.455 0.487 0.345 0.286 0.286 0.286 0.286 0.281
C
v
4
7.69 15.3 22.7 42.6 75.0 98.0 99.5 100 102
K
v
6.65 13.2 19.6 36.8 64.9 84.8 86.1 86.5 88.2
F
d
(1)
0.52 0.65 0.74 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.83 0.82 0.81 0.77 0.60 0.59 0.58 0.58 0.58
X
T
0.504 0.548 0.555 0.529 0.375 0.322 0.336 0.334 0.319
C
v
6
5.10 20.6 34.6 71.9 123 170 230 231 232
K
v
4.41 17.8 29.9 62.2 106 147 199 200 201
F
d
(1)
0.52 0.65 0.74 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.97 0.95 0.90 0.82 0.73 0.65 0.57 0.55 0.55
X
T
0.990 0.551 0.566 0.533 0.432 0.397 0.263 0.260 0.258
C
v
8
27.1 74.3 140 232 342 457 552 614 646
K
v
23.4 64.3 121 201 296 395 477 531 559
F
d
(2)
0.48 0.63 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.92 0.91 0.88 0.76 0.69 0.66 0.62 0.60 0.58
X
T
0.636 0.494 0.494 0.490 0.442 0.388 0.369 0.339 0.311
1. Measured at 60% Port.
2. Measured at 40% Port.