User Guide

4 © Copyright 2008 TAC All Rights Reserved. F-26076-2
Rangeability
Rangeability is the ratio of rated flow to the minimum controllable flow through a valve. For
diverting valves, control begins as soon as plug displacement allows flow. Thus, three-way
valve rangeability normally exceeds 500:1, which is the reciprocal of 0.2% nominal leakage.
Temperature/Pressure Ratings
See Figure-1 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-7323-0-4-P (Screwed 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: Bronze, ASTM B584
Figure-1 Temperature and Pressure Ratings for VB-7323 Series Valve Bodies.
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)
Temperature — °F (°C)
200
(1379)
300
(2068)
400
(2758)
Minimum Fluid
Temperature
20°F (-7°C)
321 psig
(2218 kPa)
VB-7323-0-4-P
Maximum Media
Temperature
281°F (138°C)