8 | Dresser Masoneilan8 | Dresser Masoneilan
C
v
and F
L
versus Travel
Direction: FLOW-TO-OPEN (FTO)
Flow Characteristic: LINEAR
mm mm
inch
inch
Contoured Trim
Percent of Travel
Rated C
V
F
L
Valve
Size
Orifice
Diameter
Travel
Close
Clearance
0.75 & 1
0.75
20
1
25
1.5 40
Quick Change Trim Only
Standard Bellows Seal construction available for ASME Class 150 - 300 (PN 20 - PN 50)
and capacities of C
v
= 1.7 and higher.
mminch
ASME
Rat
ing
Close
Clearance
20 & 25
150-
1500
10 20 30 40 50 60 70 80 90 100
0.93 0.93 0.92 0.92 0.91 0.91 0.91 0.90 0.90 0.90
150-
1500
150-
1500
150-
1500
2 50
150-
1500
3
80
150-
1500
4
100
150-
1500
6
150
150-
600
8
200
150-
600
0.125 3.2 0.8 20.3 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1
0.25 6.4 0.8 20.3 0.02 0.04 0.06 0.07 0.09 0.11 0.13 0.15 0.18 0.2
0.25 6.4 0.8 20.3 0.03 0.06 0.08 0.11 0.13 0.16 0.19 0.23 0.27 0.3
0.25 6.4 0.8 20.3 0.04 0.08 0.11 0.14 0.18 0.22 0.26 0.3 0.36 0.4
0.25 6.4 0.8 20.3 0.06 0.12 0.17 0.22 0.27 0.32 0.38 0.45 0.54 0.6
0.25 6.4 0.8 20.3 0.08 0.16 0.22 0.29 0.36 0.43 0.51 0.6 0.72 0.8
0.25 6.4 0.8 20.3 0.1 0.2 0.28 0.36 0.45 0.54 0.64 0.76 0.9 1
0.25 6.4 0.8 20.3 0.15 0.31 0.46 0.61 0.77 0.94 1.12 1.31 1.5 1.7
0.375 9.5 0.8 20.3 0.34 0.68 1.02 1.36 1.7 2.1 2.5 2.9 3.4 3.8
0.5 12.7 0.8 20.3 0.54 1.07 1.6 2.2 2.7 3.3 4.0 4.6 5.3 6
0.812 20.6 0.8 20.3 1.09 2.2 3.2 4.3 5.5 6.7 7.9 9.3 10.6 12
0.25 6.4 0.8 20.3 0.15 0.31 0.46 0.61 0.77 0.94 1.12 1.31 1.5 1.7
0.375 9.5 0.8 20.3 0.34 0.68 1.02 1.36 1.7 2.1 2.5 2.9 3.4 3.8
0.5 12.7 0.8 20.3 0.54 1.08 1.61 2.2 2.7 3.3 4 4.6 5.3 6
0.812 20.6 0.8 20.3 1.09 2.2 3.2 4.3 5.5 6.7 7.9 9.3 10.6 12
0.25 6.4 0.8 20.3 0.15 0.31 0.46 0.61 0.77 0.94 1.12 1.31 1.5 1.7
0.375 9.5 0.8 20.3 0.34 0.68 1.02 1.36 1.7 2.1 2.5 2.9 3.4 3.8
0.5 12.7 0.8 20.3 0.54 1.08 1.61 2.2 2.7 3.3 4 4.6 5.3 6
0.812 20.6 0.8 20.3 1.18 2.3 3.5 4.7 5.9 7.2 8.6 10 11.5 13
0.994 25.2 0.8 20.3 2.1 4.2 6.1 7.9 9.9 11.7 13.7 15.4 16.7 18
1.25 31.8 0.8 20.3 2.3 4.5 6.7 9 11.3 13.9 16.5 19.3 22.1 25
1.625 41.3 0.8 20.3 3.2 6.3 9.4 12.6 15.9 19.4 23.1 27 31 35
0.25 6.4 0.8 20.3 0.15 0.31 0.46 0.61 0.77 0.94 1.12 1.31 1.5 1.7
0.375 9.5 0.8 20.3 0.34 0.68 1.02 1.4 1.7 2.1 2.5 2.9 3.4 3.8
0.5 12.7 0.8 20.3 0.54 1.08 1.61 2.2 2.7 3.3 4 4.6 5.3 6
0.812 20.6 0.8 20.3 1.36 2.7 4.0 5.4 6.8 8.3 9.9 11.6 13.3 15
0.994 25.2 0.8 20.3 2.2 4.4 6.4 8.4 10.4 12.3 14.4 16.3 17.6 19
1.25 31.8 0.8 20.3 2.4 4.7 7 9.3 11.8 14.4 17.2 20.1 23 26
1.625 41.3 0.8 20.3 4.2 8.3 12.3 16.5 20.9 25.5 30.4 35.5 40.7 46
0.994 25.2 0.8 20.3 2.3 4.7 6.7 8.8 11 13 15.2 17.1 18.5 20
1.25 31.8 1.5 38.1 2.8 5.6 8.3 11.1 14.1 17.2 20.5 23.9 27.4 31
1.625 41.3 1.5 38.1 4.3 8.5 12.6 16.9 21.3 26.1 31.1 36.2 41.6 47
2 50.8 1.5 38.1 8.4 16.7 24.3 31.7 39.6 46.7 54.6 61.6 66.6 72
2.625 66.7 1.5 38.1 10 19.8 29.5 39.5 49.9 61 72.7 84.8 97.3 110
0.994 25.2 1.5 38.1 2.3 4.7 6.7 8.8 11 13 15.2 17.1 18.5 20
1.625 41.3 1.5 38.1 4.4 8.8 13.1 17.6 22.3 27.2 32.4 37.8 43.3 49
2 50.8 1.5 38.1 8.7 17.2 24.9 32.5 40.7 48 56.1 63.3 68.5 74
2.625 66.7 1.5 38.1 10.3 20.3 30.3 40.6 51.3 62.7 74.7 87.1 99.9 113
3.5 88.9 1.5 38.1 17.7 35.1 52.3 70 88.6 108 129 150 172 195
2 50.8 2 50.8 9.5 18.8 27.3 35.6 44.5 52.5 61.4 69.3 74.9 81
2.625 66.7 2 50.8 11.4 22.7 33.8 45.2 57.2 69.9 83.2 97.2 111 126
3.5 88.9 2 50.8 18.9 37.4 55.7 74.6 94.5 115 137 160 184 208
4.375 111 2 50.8 35.1 69.7 101 132 165 195 227 257 278 300
5 127 2 50.8 36.3 71.9 107 143 182 222 264 308 354 400
2.625 66.7 2 63.5 12 24 36 47 60 74 88 102 117 133
3.5 88.9 2 63.5 20 40 60 80 101 124 148 172 197 224
4.375 111 2 50.8 37 74 108 141 176 207 243 274 296 320
5 127 2 63.5 37 75 112 148 187 230 274 319 365 415
6.25 158.7 2.5 63.5 57 115 173 228 289 355 422 493 563 640