IM-P134-08
CMGT Issue 10
7
The product
must not
be used in this region.
A-B-D
High temperature spring and without spring.
E-C-D
Standard spring.
Please note:
The figures displayed are only relevant when a metal-to-metal seat is used. If Viton or EPDM
seats are used the product is restricted to the limits of the seat material chosen.
Body design conditions for saturated steam service
ASME 300
PMA
Maximum allowable pressure
49 bar g @ 37
°C
(710 psi g @ 98
°F)
TMA
Maximum allowable temperature
400
°C @ 29 bar g (752
°F @ 420 psi g)
Minimum allowable temperature
-29
°C
(-20
°F)
PMO
Maximum operating pressure for saturated steam
service
49 bar g @ 37
°C
(710 psi g @ 98
°F)
TMO
Maximum operating
temperature
Standard spring
300
°C @ 31.5 bar g (572
°F @ 457 psi g)
High temperature spring
400
°C @ 29 bar g (752
°F @ 420 psi g)
Without spring
400
°C @ 29 bar g (752
°F @ 420 psi g)
Minimum operating temperature
Note:
For lower operating temperatures consult Spirax Sarco
-29
°C
(-20.2
°F)
Temperature limits
Viton seat
-25
°C to +205
°C
(-13
°F to +401
°F)
EPDM seat
-40
°C to +120
°C
(-40
°F to +248
°F)
Designed for a maximum cold hydraulic test pressure of
76 bar g
(1 102 psi g)
Pressure bar g
Te
mp
er
atu
re
°C
A
E
B
C
D
Steam
saturation
curve
Pressure psi g
Te
mp
er
atu
re
°F
2.6 Pressure/temperature limits
Summary of Contents for DCV4
Page 12: ...IM P134 08 CMGT Issue 10 12...
