Submittal Sheet

VBN THREADED CONTROL BALL VALVES AND ACTUATORS
63-4378—06 12
Rangeability
Rangeability is a measure of a valve's controllability. It is a measured property and is expressed as the ratio of a valve's
maximum flow rate to its minimum controllable flow rate.
Table 9. 2-way available C
V
and Rangeability.
VBN2A
C
V
0.38 0.68 1.30 2.00 2.30 4.70 8.00 11.70
Rangeability 41 17 52 * 321 159 390 251
VBN2B
C
V
0.31 0.63 1.20 2.50 4.30 7.40 10.10 14.70 29.00
Rangeability 41 17 52 321 159 * 390 251 1503
VBN2C
C
V
4.40 9.00 15.30 26.00 44.00 54.00
Rangeability 159 390 1040 484 1263 1207
VBN2D
C
V
4.40 8.30 14.90 25.00 37.00 41.00 102.00
Rangeability 159 390 1040 * 484 1207 1263
VBN2E
C
V
23.00 30.00 41.00 74.00 172.00
Rangeability 484 * 603 1263 558
VBN2F
C
V
42.00 57.00 71.00 100.00 108.00 210.00 266.00
Rangeability 603 * 287 * 558 750 877
VBN2G
Cv 45.00 55.00 72.00 101.00 162.00 202.00
Rangeability 250 * 287 558 750 877
VBN2H
Cv 49.00 63.00 82.00 124.00 145.00
Rangeability 250 287 558 750 877