Control systems Control valves
4
Pressure/temperature limits
A
A - B Flanged PN16
QL33M and QL33D (cast iron)
Steam saturation curve
B
Pressure bar g
A - B Flanged PN25 A - C Flanged PN16
QL73M and QL73D (SG iron)
Steam saturation curve
Pressure bar g
A - B Flanged PN40 A - C Flanged PN25
4.1 115
QL43M and QL43D (carbon steel)
Steam saturation curve
Pressure bar g
A - B Flanged PN40 A - C Flanged PN25
QL63M and QL63D (stainless steel)
Steam saturation curve
Pressure bar g
The product must not be used in this region. High temperature packing is required.
QL33M and QL33D
PN16
Body design conditions
QL43M, QL43D, QL63M and QL63D
PN40
QL73M and QL73D
PN25
Maximum differential pressures
See specific actuator Technical Information Sheet.
PTFE
Maximum 232 °C
Standard bonnet
Graphite
Maximum 250 °C
Stem seal:
PTFE
Maximum 250 °C
Extended bonnet
Graphite
Maximum 400 °C
TI-P359-14 CTLS Issue 8
Page 3 of 11
QLM and QLD Three-port Control Valves
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