Flowserve WUC Worthington - Manual (Page 22)

WUC USER INSTRUCTIONS ENGLISH - 07/14
Page 22 of 52
4.5.3.2 Gas Coffer Dam Design
Venting of the suction side of the pump follows the
same logic as described in paragraph 4.5.3.1.
The gas coffer dam (discharge side) is vented via the
balancing line (N5 of Fig.5). The balancing line shall
be connected to the gas phase of the suction tank.
The line shall be kept open during operation.
Fig.5