Control systems Safety valves
4
Pressure/temperature limits
A
B
Steam saturation curve
C
Pressure bar g
The product must not be used in this region.
A - B Metal seat B - C EPDM seat seal is limited to a maximum operating temperature of 130 °C.
Body design conditions
PN40
Maximum
40 bar g
DN25 to DN40
Minimum
0.1 bar g
Maximum
33 bar g
DN50
Minimum
0.1 bar g
4.7 83
Maximum
28 bar g
Set pressure Please note: That higher set pressures are available with special springs. Consult Spirax Sarco.
DN65
Minimum
0.1 bar g
Maximum
13.6 bar g
DN80
Minimum
0.1 bar g
Maximum
15 bar g
DN100 and DN125
Minimum
0.1 bar g
Maximum
7 bar g
DN150
Minimum
0.1 bar g
Maximum
+300 °C
Metal seat
Minimum
-270 °C
Temperature
Maximum
+130 °C
EPDM seat
Minimum
-45 °C
Overpressure
Steam, gas, liquid Maximum 10%
Blowdown limits
Steam, gas, liquid Maximum 10%
Performance data
Steam, gas
0.70
Derated coefficient of discharge values
Liquid
0.45
Designed for a maximum inlet cold hydraulic test pressure of:
60 bar g
TI-P315-04 CTLS Issue 4
Page 3 of 7
SVL606 Stainless Steel Safety Valve
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