Pipeline ancillaries Depressurisation valves
10
Pressure/temperature limits Note: When the BDV1 and BDV2 are fitted for use as blowdown valves on other products, the limiting conditions are that of the lowest rated part. See the appropriate TI as listed in the table below for technical data:
TD42
ASTM body
TI-P179-02
TI-P068-22
FTC80
TD42L, TD42LA, TD42H and TD42HA
EN body
TI-P179-03
TI-S01-03
BPC32Y
TD42S2 TD42S3
TI-P005-01
TI-P068-07
BPS32Y
TI-P005-03
TI-P068-23
PC20
TD62
TI-P128-15
TI-P068-08
SMC32Y
UTD30L, UTD30LA, UTD30H and UTD30HA
TI-P076-10
TI-P154-01
TD3-3
TI-P068-04
Steam saturation curve
Pressure bar g
The product must not be used in this region.
Body design conditions
ANSI Class 600 (ISO PN100)
PMA Maximum allowable pressure
100 bar g @ 200 °C
TMA Maximum allowable temperature
455 °C @ 66 bar g
Minimum allowable temperature
0 °C
PMO Maximum operating pressure for saturated steam service
85 bar g
TMO Maximum operating temperature
455 °C @ 66 bar g
7.14.4
Minimum operating temperature
0 °C
80 bar g
D PMX Maximum differential pressure
PMOB Maximum operating backpressure is 100% of the upstream pressure Minimum operating pressure for satisfactory operation
0 bar g
Designed for a maximum cold hydraulic test pressure of:
150 bar g
10.14 3
K v values
K v value 0.48 (cold)
For conversion: C v (UK) = K v x 0.963 C v (US) = K v x 1.156
TI-P600-01 CMGT Issue 10
Page 3 of 4
BDV1 and BDV2 Blowdown/Depressurisation Valves
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