44
Control systems Safety valves
Table 3 - SV60 flow capacity for water in tonnes/h at 25% overpressure (calculated in accordance with AD-MERKBLATT A2 and TRD 421)
Valve size DN in/out
20/32
25/40 32/50 40/65 50/80 65/100 80/125 100/150 125/200 150/250
Orifice (mm)
17.0
23.8
30.6
38.0
50.1
59.0
73.0
91.0
105
125
Flow area (mm²)
230
445
740
1140
1979
2734
4185
6504
8659
12272
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
w
Set pressure (bar g)
Flow capacity for water tonnes/h
0.5
4.6
8.9
14.9
22.9
39.8
55.0
84.1
130.8
174.1
246.7
1.0
6.5
12.6
21.0
32.4
56.3
77.7
119.0
184.9
246.2
348.9
2.0
9.2
17.9
29.8
45.8
79.6
109.9
168.3
261.5
348.2
493.5
3.0
11.3
21.9
36.5
56.1
97.5
134.6
206.1
320.3
426.4
604.4
4.0
13.1
25.3
42.1
64.8
112.6
155.5
238.0
369.9
492.4
697.9
5.0
14.6
28.3
47.1
72.5
125.8
173.8
266.1
413.5
550.5
780.2
6.0
16.0
31.0
51.6
79.4
137.8
190.4
291.5
453.0
603.1
854.7
7.0
17.3
33.5
55.7
85.8
148.9
205.7
314.9
489.3
651.4
923.2
4.7 48
8.0
18.5
35.8
59.5
91.7
159.2
219.9
336.6
523.1
696.4
986.9
9.0
19.6
37.9
63.1
97.2
168.8
233.2
357.0
554.8
738.6 1 046.8
10.0
20.6
40.0
66.6
102.5
178.0
245.8
376.3
584.8
778.6 1 103.4
11.0
21.7
42.0
69.8
107.5
186.6
257.8
394.7
613.3
816.6 1 157.3
12.0
22.6
43.8
72.9
112.3
194.9
269.3
412.2
640.6
852.9 1 208.7
13.0
23.5
45.6
75.9
116.9
202.9
280.3
429.1
666.8
887.7 1 258.1
14.0
24.4
47.3
78.8
121.3
210.6
290.9
445.3
691.9
921.2 1 305.6
15.0
25.3
49.0
81.5
125.5
218.0
301.1
460.9
716.2
953.5 1 351.4
16.0
26.1
50.6
84.2
129.7
225.1
310.9
476.0
739.7
984.8 1 395.7
17.0
26.9
52.2
86.8
133.7
232.0
320.5
490.7
762.5 1 015.1
18.0
27.7
53.7
89.3
137.5
238.8
329.8
504.9
784.6 1 044.6
19.0
28.5
55.1
91.7
141.3
245.3
338.8
518.7
806.1 1 073.2
20.0
29.2
56.6
94.1
145.0
251.7
347.6
532.2
827.0 1 101.1
21.0
29.9
58.0
96.5
148.6
257.9
356.2
545.3
847.4
22.0
30.6
59.3
98.7
152.0
264.0
364.6
558.2
867.4
23.0
31.3
60.7
100.9
155.5
269.9
372.8
570.7
886.9
24.0
32.0
62.0
103.1
158.8
275.7
380.8
583.0
906.0
25.0
32.6
63.2
105.2
162.1
281.4
388.7
595.0
940.0
26.0
33.3
64.5
107.3
165.3
287.0
396.4
606.8
27.0
33.9
65.7
109.4
168.4
292.4
403.9
618.4
28.0
34.6
66.9
111.4
171.5
297.8
411.3
629.7
29.0
35.2
68.1
113.3
174.6
303.1
418.6
640.9
Continued on next page
TI-S13-27 CMGT Issue 17
Page 10 of 13
SV60 Safety Valve
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