Control valves
Safety valves
Page 2 of 4
A
Steam saturation
curve
C
B
4.7.27
Valve size DN in/out
25/40
32/50
40/65
50/80
65/100
80/125
100 / 150
125 / 200
150 / 250
Flow area
mm
2
in
2
416
661
1 075
1 662
2 827
4 301
6 648
7 543
12 272
0.645
1.024
1.666
2.576
4.382
6.667
10.3
11.69
19.02
Set pressure (bar g)
Dry saturated steam, kg/h
0.2
151
240
390
604
1 027
1 562
2 415
2 740
4 457
0.5
214
341
554
857
1 457
2 217
3 427
3 888
6 325
1.0
319
507
825
1 275
2 169
3 300
5 100
5 787
9 415
2.0
504
801
1 303
2 015
3 427
5 213
8 058
9 143
14 875
3.0
678
1 077
1 751
2 707
4 605
7 006
10 829
12 297
19 991
4.0
843
1 339
2 177
3 366
5 726
8 711
13 465
15 277
24 855
5.0
1 007
1 599
2 601
4 022
6 840
10 407
16 086
18 252
29 694
6.0
1 170
1 859
3 023
4 674
7 951
12 096
18 697
21 214
34 514
7.0
1 333
2 118
3 444
5 325
9 058
13 781
21 300
24 168
39 320
8.0
1 495
2 376
3 864
5 975
10 162
15 461
23 898
27 115
9.0
1 658
2 634
4 284
6 623
11 265
17 138
26 491
30 057
10.0
1 820
2 891
4 702
7 270
12 366
18 813
29 080
32 995
12.0
2 143
3 406
5 539
8 563
14 565
22 160
43 252
38 863
13.6
2 402
3 817
6 207
9 596
16 323
24 834
38 385
43 553
15.0
1 628
4 176
6 792
10 501
17 861
42 003
47 657
16.0
2 790
4 433
7 210
11 147
18 960
18.0
3 114
4 947
8 046
12 440
21 159
20.0
3 438
5 462
8 883
13 733
23 360
22.0
3 762
5 978
9 722
15 030
25 565
Pressure/temperature limits
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The product must not be used in this region.
A - B Metal seat
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C - B
EPDM seat seal is limited to a maximum operating
temperature of 130°C.
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Body design conditions
Set pressure
Please note: That
higher set pressures
are available with
special springs.
Consult Spirax Sarco.
Temperature
Performance data
Pressure bar g
DN25 to DN40
DN50
DN65
DN80
DN100 and DN125
DN150
Metal seat
EPDM seat
Overpressure
Blowdown limits
Derated coefficient of
discharge values
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
PN40
40 bar g
0.1 bar g
33 bar g
0.1 bar g
28 bar g
0.1 bar g
13.6 bar g
0.1 bar g
15 bar g
0.1 bar g
7 bar g
0.1 bar g
+300°C
-270°C
+130°C
-45°C
Maximum 10%
Maximum 10%
0.70
0.45
60 bar g
Designed for a maximum inlet cold hydraulic test pressure of:
Steam, gas, liquid
Steam, gas, liquid
Steam, gas
Liquid
Table 1 - SVL606 flow capacity for dry saturated steam in kilogrammes per hour (kg / h)
(calculated at 10% overpressure in accordance with EN ISO 4126)
The product must not be used in this region
SVL606 Stainless Steel Safety Valve
TI-P315-04 CH Issue 3
Page 2 of 4
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