44
Control systems Self-acting controls
Pressure/temperature limits
Cast iron valves - flanged PN16
Bronze valves - screwed and flanged PN25
Pressure bar g
Pressure bar g
The product must not be used in this region.
Cast iron
PN16
Body design conditions
Bronze
PN25
Cast iron
16 bar g @ 120 °C
Maximum design pressure
Bronze
25 bar g @ 120 °C
Cast iron
200 °C @ 13.5 bar g
Maximum design temperature
4.5 66
Bronze
200 °C @ 21.0 bar g
Cast iron
-10 °C
Minimum design temperature
Bronze
-90 °C
Cast iron
200 °C @ 13.5 bar g
Maximum operating temperature
Bronze
200 °C @ 21.0 bar g
Cast iron
-10 °C
Minimum operating temperature
Bronze
-20 °C
Note: For lower operating temperatures consult Spirax Sarco
¾ ", 1" and 1 ½ "
3.4 bar
Maximum differential pressure
DN50, DN80 and DN100
2.7 bar
Cast iron
24 bar g
Designed for a maximum cold hydraulic test pressure of:
Bronze
37.5 bar g
Leakage rate
1% of full Kv (see overleaf for Kv values)
Kv values Size
¾"
1"
1½"
DN50
DN80
DN100
For conversion: C v (UK) = K v x 0.963 C v (US) = K v x 1.156
Kv
4.64
8.96
20.29
41.20
97.85
118.45
Stroke mm Size
¾"
1"
1½"
DN50
DN80
DN100
Stroke
2.7
4.3
5.9
7.7
12.4
13.9
Sizing See TI-GCM-09.
TI-P047-01 CTLS Issue 13
Page 2 of 5
TW Three-port Self-acting Control Valve for Liquid Systems
Powered by FlippingBook