Steam traps
Thermodynamic
Pressure / temperature limits (ISO 6552) - Flanged ASME
Flanged:
ASME Class 150
ASME Class 300
ASME Class 600
450
A D
C
B
400
300
200
100
0
0
20
40
60
80
99.3
Pressure bar g
Steam
saturation
curve
D
C
The product must not be used in this region or beyond the parameter of the PMA or TMA of the relative end connection.
B
A - B - B
ASME 600
Body design conditions
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO Maximum operating pressure
TMO Maximum operating temperature
Minimum operating temperature
Minimum operating pressure
Maximum operating backpressure
Designed for a maximum cold hydraulic pressure of:
ASME Class 600
99.3 bar g @ 38 °C
450 °C @ 54.8 bar g
-50 °C
46 bar g
450 °C @ 46 bar g
0 °C
1.5 bar g
80% of the upstream pressure
149 bar g
ASME Class 300
49.6 bar g @ 38 °C
450 °C @ 27.4 bar g
-50 °C
33 bar g
450 °C @ 27.4 bar g
0 °C
1.5 bar g
80% of the upstream pressure
74.4 bar g
ASME Class 150
19 bar g @ 38 °C
450 °C @ 4.6 bar g
-50 °C
14 bar g
450 °C @ 4.6 bar g
0 °C
1.5 bar g
80% of the upstream pressure
28.5 bar g
A - C - C
ASME 300
Body design conditions
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO Maximum operating pressure for
TMO Maximum operating temperature
Minimum operating temperature
Minimum operating pressure
Maximum operating backpressure
saturated steam service
Designed for a maximum cold hydraulic pressure of:
A - D - D
ASME 150
Body design conditions
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO Maximum operating pressure for
TMO Maximum operating temperature
Minimum operating temperature
Minimum operating pressure
Maximum operating backpressure
saturated steam service
Designed for a maximum cold hydraulic pressure of:
TI-P187-02 CMGT Issue 5
Page 3 of 5
TDS46M Thermodynamic Steam Trap with Maintainable Seat
5.7.30
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