User Guide

4 © Copyright 2008 TAC All Rights Reserved. F-24380-2
Rangeability
Rangeability is the ratio of rated flow to the minimum controllable flow through a valve.
Table-3 lists the rangeability for VB-7211 series of 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-7211-0-3-P, VB-7211-0-4-P (Union End Cast Bronze Body)
Standards: Pressure to ANSI B16.15 Class 250 with 400 psig up to 150°F
decreasing to 321 psig at 281°F
Materials: ASTM B584
Figure-2 Temperature and Pressure Ratings
for VB-7211 Series Valve Bodies.
Valve Body
Part Number
Nominal
Rangeability
Valve Body
Part Number
Nominal
Rangeability
Valve Body
Part Number
Nominal
Rangeability
VB-7211-0-X-1 5:1 VB-7211-0-X-4 40:1 VB-7211-0-X-7 60:1
VB-7211-0-X-2 15:1 VB-7211-0-X-5 50:1 VB-7211-0-X-8 75:1
VB-7211-0-X-3 25:1 VB-7211-0-X-6 60:1 VB-7211-0-X-9 75:1
50
(345)
250 (121)
200 (93)
150 (65)
100 (38)
50 (10)
300 (149)
150
(1034)
250
(1724)
350
(2458)
100
(689)
Pressure — psig (kPa)
321 psig
(2218 kPa)
Temperature — °F (°C)
200
(1379)
300
(2068)
400
(2758)
Maximum Media
Temperature
281°F (138°C)
Minimum Fluid
Temperature
20°F (-7°C)
VB-7211-0-X-P