Pipeline ancillaries Disc, split disc and wafer check valves
10
Pressure/temperature limits (ISO 6552) - Flanged ASME
Pressure psi g
0 100 200 300 400 500 600 700
100 200 300 400 500 538
0 200 400 600 800 1000
A
SDCV3 Carbon steel SDCV4 Stainless steel
Steam saturation curve
-29 0
C
B
0
10
20
30
40
49.6
Pressure bar g
The product must not be used in this region or beyond the parameter of the PMA or TMA of the relative end connection.
Body design condition
ASME 300
49.6 bar g @ 38 ° C
719 psi g @ 100 ° F
PMA Maximum allowable pressure
538 ° C @ 25.2 bar g 1000 ° F @ 365.5 psi g
TMA Maximum allowable temperature
-21 ° C
-5.8 ° F
Metal seat
Minimum allowable temperature
-10 ° C
14 ° F
Fluoroelastomer soft seat
ASME 300
49.6 bar g @ 38 ° C
719 psi g @ 100 ° F
A - B
PMO Maximum operating pressure
Metal seat 538 ° C @ 25.2 bar g 1000 ° F @ 365.5 psi g Fluoroelastomer soft seat 200 ° C @ 35.7 bar g 392 ° F @ 518 psi g
Maximum operating temperature
TMO
-21 ° C
-5.8 ° F
Metal seat
Minimum operating temperature
-10 ° C
14 ° F
Fluoroelastomer soft seat
Designed for a maximum cold hydraulic test pressure of:
76 bar g
1 102 psi g
Body design condition
ASME 150
7.5.43
19 bar g @ 38 ° C 275.5 psi g @ 100 ° F
PMA Maximum allowable pressure
538 ° C @ 1.4 bar g 1000 ° F @ 20.3 psi g
TMA Maximum allowable temperature
-21 ° C
-5.8 ° F
Metal seat
Minimum allowable temperature
-10 ° C
14 ° F
Fluoroelastomer soft seat
ASME 150
A - C
19 bar g @ 38 ° C 275.5 psi g @ 100 ° F
PMO Maximum operating pressure
Metal seat 538 ° C @ 1.4 bar g 1000 ° F @ 20.3 psi g Fluoroelastomer soft seat 200 ° C @ 13.7 bar g 192 ° F @ 198.7 psi g
Maximum operating temperature
TMO
10.5 60
-21 ° C
-5.8 ° F
Metal seat
Minimum operating temperature
-10 ° C
14 ° F
Fluoroelastomer soft seat
Designed for a maximum cold hydraulic test pressure of:
30 bar g
435 psi g
TI-P601-43 CMGT Issue 4
Page 4 of 6
SDCV3, SDCV4, SDCV7 and SDCV8 Split Disc Check Valves
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