Data Sheet
Bulletin 74.3:ACE97
9
Table 11. NPS 2 / DN 50 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
1210
1490
1720
1920
32.4
39.9
46.1
51.5
2130
2600
3010
3360
57.1
69.7
80.7
90.0
4260
5210
6020
6730
114
140
161
180
6
7
8
9
10
15
17
20
22
25
2100
2270
2430
2580
2720
56.3
60.8
65.1
69.1
72.9
3680
3980
4260
4510
4760
98.6
107
114
121
128
7370
7970
8520
9030
9520
198
214
228
242
255
12
14
16
18
20
30
35
40
45
50
2980
3220
3440
3650
3840
79.9
86.3
92.2
97.8
103
5210
5630
6020
6380
6730
140
151
161
171
180
10,430
11,270
12,040
12,770
13,470
280
302
323
342
361
22
24
26
28
30
55
60
65
70
75
4030
4210
4380
4550
4710
108
113
117
122
126
7060
7370
7670
7960
8240
189
198
206
213
221
14,120
14,750
15,350
15,930
16,490
378
395
411
427
442
1.0 psig
1.1 psig
1.2 psig
1.3 psig
1.4 psig
69
76
83
90
97
4520
4740
4960
5160
5350
121
127
133
138
143
7920
8310
8680
9030
9370
212
223
233
242
251
15,800
16,600
17,300
18,000
18,700
423
445
464
482
501
1.5 psig
1.6 psig
1.7 psig
1.8 psig
1.9 psig
103
110
117
124
131
5540
5720
5900
6070
6240
148
153
158
163
167
9700
10,000
10,300
10,600
10,900
260
268
276
284
292
19,400
20,000
20,600
21,200
21,800
520
536
552
568
584
2.0 psig
2.1 psig
2.2 psig
2.3 psig
2.4 psig
138
145
152
159
165
6400
6560
6720
6870
7020
172
176
180
184
188
11,200
11,400
11,700
12,000
12,200
300
306
314
322
327
22,400
22,900
23,500
24,000
24,500
600
614
630
643
657
2.5 psig
2.6 psig
2.7 psig
2.8 psig
172
179
186
193
7170
7310
7450
7590
192
196
200
203
12,500
12,700
13,000
13,200
335
340
348
354
25,000
25,500
26,000
26,500
670
683
697
710
1. Always use the differential pressure between tank pressure (depad setpoint) and vent header (vapor recovery) pressure to calculate ow through the depad valve.