Data Sheet
Bulletin 74.3:ACE97
11
Table 13. NPS 4 / DN 100 Depad Valve Capacities of 1.0 Specific Gravity Air
(1)
m
C
v
C
v
C
v
Nm
Nm
Nm
2
3
4
5
5
7
10
12
9100
11,100
12,900
14,400
244
297
346
386
12,100
14,900
17,200
19,200
324
399
461
515
17,000
20,800
24,100
26,900
456
557
646
721
6
7
8
9
10
15
17
20
22
25
15,800
17,000
18,200
19,300
20,400
423
456
488
517
547
21,000
22,700
24,300
25,800
27,200
563
608
651
691
729
29,500
31,800
34,000
36,100
38,100
791
852
911
967
1021
12
14
16
18
20
30
35
40
45
50
22,300
24,100
25,800
27,300
28,800
598
646
691
732
772
29,800
32,200
34,400
36,500
38,400
799
863
922
978
1029
41,700
45,000
48,100
51,100
53,800
1118
1206
1289
1369
1442
22
24
26
28
30
55
60
65
70
75
30,200
31,600
32,900
34,100
35,300
809
847
882
914
946
40,300
42,100
43,800
45,500
47,100
1080
1128
1174
1219
1262
56,500
59,000
61,400
63,700
65,900
1514
1581
1646
1707
1766
1.0 psig
1.1 psig
1.2 psig
1.3 psig
1.4 psig
69
76
83
90
97
33,900
35,600
37,200
38,700
40,100
909
954
997
1037
1075
45,200
47,400
49,600
51,600
53,500
1211
1270
1329
1383
1434
63,300
66,400
69,400
72,200
75,000
1696
1780
1860
1935
2010
1.5 psig
1.6 psig
1.7 psig
1.8 psig
1.9 psig
103
110
117
124
131
41,600
42,900
44,300
45,500
46,800
1115
1150
1187
1219
1254
55,400
57,200
59,000
60,700
62,400
1485
1533
1581
1627
1672
77,600
80,200
82,600
85,100
87,400
2080
2149
2214
2281
2342
2.0 psig
2.1 psig
2.2 psig
2.3 psig
2.4 psig
138
145
152
159
165
48,000
49,200
50,400
51,500
52,600
1286
1319
1351
1380
1410
64,000
65,600
67,200
68,700
70,200
1715
1758
1801
1841
1881
89,700
91,900
94,100
96,200
98,300
2404
2463
2522
2578
2634
2.5 psig
2.6 psig
2.7 psig
2.8 psig
172
179
186
193
53,700
54,800
55,900
56,900
1439
1469
1498
1525
71,700
73,100
74,500
75,900
1922
1959
1997
2034
100,300
102,300
104,300
106,200
2688
2742
2795
2846
1. Always use the differential pressure between tank pressure (depad setpoint) and vent header (vapor recovery) pressure to calculate ow through the depad valve.