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Set Plug Module #1 –
100%
Line Pressure
Bleed Down LP Side to
50%
of HP Side
Set Plug Module #2 –
50%
Line Pressure
Bleed Down LP Side to
Ambient
Pressure
LOW
LINE PRESSURE
DP
*
Monitored
DP
*
Monitored
DP
*
Monitored
*
Differential Pressure
Plug
Module #2
Control
Module
Annulus pressure monitored
for verification of both seals
50%
LINE PRESSURE