User Guide

4 © Copyright 2008 TAC All Rights Reserved. F-24390-2
Figure-1 Typical Modified Equal Percentage Flow Characteristics.
Rangeability
Rangeability is the ratio of rated flow to the minimum controllable flow through a valve.
Table-3 lists the rangeability for VB-7273 series valves.
Table-3 Rangeability.
Temperature/Pressure Ratings
See Figure-2 for temperature and pressure ratings. Consult the appropriate valve linkage
general instruction sheet for the effect of valve body ambient temperatures on specific
actuators. Ratings conform with published values and disclaimer.
VB-7273-0-4-P (Screwed Cast Bronze Body)
Standards: Pressure to ANSI B16.15 Class 250 with 400 psig up to 150°F
Materials: Bronze, ASTM B584
Flow
Stroke
Closed
Open
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0%
10% 20% 30% 40% 50% 60% 70% 80% 90%
100%
Valve Body
Part Number
Nominal
Rangeability
Valve Body
Part Number
Nominal
Rangeability
VB-7273-0-4-1 5:1 VB-7273-0-4-7 60:1
VB-7273-0-4-2 15:1 VB-7273-0-4-8 75:1
VB-7273-0-4-3 25:1 VB-7273-0-4-9 75:1
VB-7273-0-4-4 40:1 VB-7273-0-4-10 75:1
VB-7273-0-4-5 50:1 VB-7273-0-4-11 75:1
VB-7273-0-4-6 60:1