Data Sheet
V500 Valve
D100054X012
Product Bulletin
51.3:V500
May 2012
21
Table 18. Fisher V500 Forward Flow, Level 4 Trim Reduced Port
Coefficients
Valve
Size,
NPS
Valve Rotation, Degrees
Modified Linear
Characteristic
10 20 30 40 50 60 70 80 90
C
v
1
2.14 3.70 4.65 5.25 5.50 5.57 5.66 5.66 5.66
K
v
1.84 3.18 4.00 4.52 4.73 4.79 4.87 4.87 4.87
F
d
(1)
0.54 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.64 0.75 0.75 0.79 0.75 0.74 0.73 0.73 0.73
X
T
0.286 0.388 0.464 0.483 0.471 0.459 0.444 0.444 0.444
C
v
1-1/2
2.10 4.55 6.16 8.00 10.4 11.3 11.3 11.3 11.3
K
v
1.81 3.91 5.30 6.88 8.94 9.72 9.72 9.72 9.72
F
d
(1)
0.53 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.82 0.79
²0.79
0.79 0.79 0.72 0.72 0.72 0.72
X
T
0.469 0.397 0.454 0.500 0.502 0.482 0.482 0.482 0.482
C
v
2
2.75 5.15 6.70 9.65 13.7 16.8 18.8 18.8 17.9
K
v
2.37 4.43 5.76 8.30 11.8 14.5 16.2 16.2 15.4
F
d
(1)
0.54 0.66 0.75 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.75 0.76 0.83
²0.86
0.87 0.85 0.77 0.77 0.81
X
T
0.467 0.448 0.519 0.624 0.612 0.543 0.444 0.439 0.484
C
v
3
4.12 9.50 13.1 19.8 29.6 39.0 45.3 48.0 48.0
K
v
3.56 8.22 11.3 17.1 25.6 33.7 39.2 41.5 41.5
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 0.80 0.88 0.86 0.84 0.82 0.81 0.79 0.77
X
T
0.469 0.551 0.605 0.522 0.518 0.551 0.515 0.466 0.466
C
v
4
2.26 11.2 20.1 33.3 50.8 69.1 83.0 89.3 90.1
K
v
1.95 9.69 17.4 28.8 43.9 59.8 71.8 77.2 77.9
F
d
(1)
0.52 0.65 0.74 0.82 0.88 0.92 0.96 0.99 1.00
F
L
0.96 0.95 0.85 0.86 0.86 0.83 0.80 0.77 0.74
X
T
0.779 0.779 0.632 0.620 0.612 0.589 0.537 0.466 0.452
C
v
6
13.6 37.9 49.8 82.9 122 159 184 194 196
K
v
11.8 32.8 43.1 71.7 106 138 159 168 170
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 0.69 0.72 0.74 0.77 0.81 0.81 0.77 0.77
X
T
0.518 0.280 0.381 0.357 0.397 0.452 0.476 0.452 0.442
C
v
8
19.7 63.6 134 228 334 438 526 587 605
K
v
17.0 55.0 116 197 289 379 455 508 523
F
d
(2)
0.48 0.63 0.73 0.81 0.87 0.92 0.96 0.99 1.00
F
L
0.93 0.83 0.76 0.77 0.77 0.77 0.75 0.75 0.72
X
T
0.597 0.473 0.422 0.394 0.378 0.381 0.400 0.429 0.436
1. Measured at 60% Port.
2. Measured at 40% Port.