44
Control systems Pressure reducing/surplussing valves
Pressure/temperature limits
Pressure psi g
Steam saturation curve
0
145
274
377 435
528 580
D
482 392 302 212 122 32
A
B
F
G
C
E
Pressure bar g
The product must not be used in this region. A-D-E Flanged EN 1092 PN40, BS 10 Table J and ASME (ANSI) 300. A-B-C Flanged ASME (ANSI) 150. F-G DP163G limited to 120 °C @ 26 bar g (248 °F @ 377 psi 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 (2.9 psi g to 247 psi g) Grey 16.0 bar g to 21 bar g (232 psi g to 305 psi g) Yellow 0.2 bar g to 3.0 bar g (2.9 psi g to 43.5 psi g) (DP163Y only)
4.6 106
Body design conditions
PN40
A-D-E
36.4 bar g @ 20 °C
528 psi g @ 68 °F
Maximum design pressure
A-B-C
18.9 bar g @ 20 °C
274 psi g @ 68 °F
Maximum design temperature
250 °C @ 24 bar g
482 °F @ 348 psi g
Minimum design temperature
-10 °C
14 °F
A-D-E
25 bar g
363 psi g
Maximum upstream pressure for saturated steam service
A-B-C
14 bar g
203 psi g
A-D-E
250 °C @ 24 bar g
482 °F @ 348 psi g
Maximum operating temperature
A-B-C
250 °C @ 12.1 bar g
482 °F @ 175 psi g
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco
0 °C
32 °F
A-D-E
25 bar g
363 psi g
Maximum differential pressure
A-B-C
14 bar g
203 psi g
Designed for a maximum cold hydraulic test pressure of:
60 bar g
870 psi g
Note: With internals fitted, test pressure must not exceed:
40 bar g
580 psi g
TI-P107-01 CTLS Issue 13
Page 2 of 14
DP163, DP163G and DP163Y Pilot Operated Pressure Reducing Valve with Stainless Steel Bodies
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