44
Control systems Safety valves
Capacity Table - Steam - 10% Overpressure - kg/h
Orifice Designation / Current Area (cm²)
Set pressure (bar g)
J
K
L
M
N
P
Q
R
8.867
12.69
19.71
24.81
29.90
44.06
76.20
110.47
1.0
883
1264
1963
2471
2978
4389
7590
11004
1.5
1082
1549
2405
3028
3649
5377
9299
13482
2.0
1281
1833
2848
3584
4320
6366
11009
15960
2.5
1497
2143
3328
4189
5048
7439
12865
18651
3.0
1716
2456
3814
4801
5786
8526
14746
21378
3.5 4.0 4.5
1935
2769
4301
5413
6524
9614
16626
24104
2154
3082
4787
6026
7262
10701
18507
26830
2372
3395
5273
6638
8000
11788
20387
29556
5.0
2591
3708
5760
7250
8737
12875
22267
32282
5.5 6.0 6.5
2810
4021
6246
7862
9475
13963
24148
35008
3029
4335
6733
8475
10213
15050
26028
37734
3248
4648
7219
9087
10951
16137
27909
40460
4.7 8
7.0
3466
4961
7705
9699
11689
17225
29789
43186
7.5
3685
5274
8192
10311
12427
18312
31670
45912
8.0
3904
5587
8678
10924
13165
19399
33550
48639
8.5
4123
5900
9164
11536
13902
20486
35430
51365
9.0
4342
6214
9651
12148
14640
21574
37311
54091
9.5
4560
6527
10137
12760
15378
22661
39191
56817
10 12 14 16 18 20
4779
6840
10624
13373
16116
23748
41072
59543
5655
8092
12569
15821
19067
28097
48593
70447
6530
9345
14515
18270
22019
32446
56115
81352
7405
10598
16460
20719
24970
36796
63636
92256
8280
11850
18406
23168
27922
41145
71158
103161
9156
13103
20351
25617
30873
45494
78680
114065
20.7
9462
13541
21032
26475
31906
47016
81312
117882
For sizing using current areas (ASME), the discharge coefficient K for steam is 0.853.
TI-P709-01 CTLS Issue 1
Page 8 of 13
SV47H SG Iron Safety Valve
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