Spirax Sarco DP143 - Page 7

IM-P006-07 CTLS Issue 12
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2.1.2 Pressure/temperature limits
Pressure bar g
Temperature °C
A B
F
Steam
saturation
curve
D
EGC
The product must not be used in this region.
Use the high temperature DP143H version in this region.
A-D-E Flanged EN 1092 PN40, ASME 300 and BS 10 Table J.
A-B-C Flanged ASME 150.
F-G DP143G limited to 120 °C @ 26 bar g.
Note: Two colour coded pressure adjustment springs are available for the following downstream pressure
ranges:
Red 0.2 bar g to 17 bar g
Grey 16.0 bar g to 24 bar g
Body design conditions PN40
Maximum design pressure
A-D-E 40 bar g @ 40 °C
A-B-C 17.3 bar g @ 40 °C
Maximum design temperature 350 °C @ 24 bar g
Minimum design temperature 0 °C
Maximum upstream pressure for saturated steam service
A-D-E 28 bar g
A-B-C 14 bar g
Maximum operating temperature
DP143 300 °C @ 25 bar g
DP143G 120 °C @ 26 bar g
DP143H 350 °C @ 24 bar g
Minimum operating temperature
Note: For lower operating temperatures consult Spirax Sarco.
0 °C
Maximum differential pressure
A-D-E 28 bar
A-B-C 14 bar
Designed for a maximum cold hydraulic test pressure of: 60 bar g
Note: With internals fitted, test pressure must not exceed: 40 bar g