Pipeline ancillaries Disc, split disc and wafer check valves
10
Pressure/temperature limits
400 300 200 100 0 -196 0 5 10152025303540 E C B A Steam saturation curve
Pressure bar g
The product must not be used in this region. For use in this area use a DCV8 with high temperature spring or DCV8 without spring.
A - B - D Without standard or high temperature springs. E - C - D Standard spring and heavy duty spring.
Please note: Special testing to allow lower temperature operation can be provided at extra cost. Consult Spirax Sarco.
Body design conditions
PN40
PMA Maximum allowable pressure
40 barg @ 50 °C
TMA Maximum allowable temperature
400 °C @ 25.6 barg
Minimum allowable temperature
-196 °C
PMO Maximum operating pressure
40 bar g @ 50 °C
Standard spring
300 °C @ 27.6 bar g
Heavy duty spring
300 °C @ 27.6 bar g
TMO Maximum operating temperature
High temperature spring
400 °C @ 25.6 bar g
Without spring
400 °C @ 25.6 bar g
Minimum operating temperature (standard disc)
-196 °C
7.5.24
Viton seat
-25 °C to +205 °C
Temperature limits
EPDM seat
-40 °C to +120 °C
Designed for a maximum cold hydraulic test pressure of
60 bar g
10.5 33
TI-P601-01 CMGT Issue 13
Page 3 of 5
DCV8 Disc Check Valve
Powered by FlippingBook