Honeywell AUTOMATIC CONTROL - Page 460

ENGINEERING MANUAL OF AUTOMATIC CONTROL
VALVE SELECTION AND SIZING
450
Gage
Pressure,
psig
Boiling
Point or
Steam
Temp-
erature
Deg F
Specific
Volume
(V),
cu. ft/lb
公
V
(For
valve
sizing)
Maximum
Allowable
Pressure
Drop, psi.
200
225
250
275
300
387.8
397.4
406.0
414.2
421.8
2.134
1.918
1.742
1.595
1.472
1.461
1.385
1.320
1.263
1.213
107.4
119.8
132.4
145.0
157.4
350
400
450
500
550
435.6
448.1
459.5
470.0
479.7
1.272
1.120
0.998
0.900
0.818
1.128
1.058
0.999
0.949
0.904
182.4
207.4
232.4
257.4
282.4
600
650
700
800
900
1000
488.8
497.3
505.4
520.3
533.9
546.3
0.749
0.690
0.639
0.554
0.488
0.435
0.865
0.831
0.799
0.744
0.699
0.659
307.4
332.4
357.4
407.4
457.4
507.4
Table 5. Properties of Saturated Steam (continued).