Steam traps
Thermodynamic
Pressure / temperature limits (ISO 6552) - Flanged ASME
425
A D
400
300
200
100
C
B
Flanged:
ASME Class 150
ASME Class 300
ASME Class 600
0
0
20
40
60
80
99.3
Pressure bar g
D
Steam
saturation
curve
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 condition
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 test pressure of:
Body design condition
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO Maximum operating pressure for saturated steam service
TMO Maximum operating temperature
Minimum operating temperature
Minimum operating pressure
Maximum operating backpressure
Designed for a maximum cold hydraulic test pressure of:
Body design condition
PMA Maximum allowable pressure
TMA Maximum allowable temperature
Minimum allowable temperature
PMO Maximum operating pressure for saturated steam service
TMO Maximum operating temperature
Minimum operating temperature
Minimum operating pressure
Maximum operating backpressure
Designed for a maximum cold hydraulic test pressure of:
ASME Class 600
99.3 bar g @ 38 °C
425 °C @ 56 bar g
-29 °C
46 bar g
425 °C @ 46 bar g
0 °C
1.5 bar g
80% of upstream pressure
149 bar g
ASME Class 300
51.1 bar g @ 38 °C
425 °C @ 28.8 g
-29 °C
43 bar g
425 °C @ 28.8 bar g
0 °C
1.5 bar g
80% of upstream pressure
76.6 bar g
ASME Class 150
19.6 bar g @ 38 °C
425 °C @ 5.5 bar g
-29 °C
14 bar g
425 °C @ 5.5 bar g
0 °C
1.5 barg
80% of upstream pressure
A - C - C
ASME 300
A - D - D
ASME 150
29.4 bar g
TI-P187-04 CMGT Issue 6
TDC46M Carbon Steel Thermodynamic Steam Trap with Maintainable Seat
Page 3 of 5
5.7.24
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