Fig.9: Vacuum balance system
1 Vessel under vacuum 2 Vacuum balance line
3 Shut-off element 4 Swing check valve
5 Main shut-off element 6 Vacuum-tight shut-off element
NOTE
An additional line fitted with a shut-off valve (from the pump discharge nozzle to
the balance line) facilitates venting of the pump before start-up.
5.3.4 Auxiliary connections
DANGER
Risk of potentially explosive atmosphere by mixing of incompatible fluids in the
auxiliary piping
Risk of burns!
Explosion hazard!
▷ Make sure that the barrier fluid or quench liquid are compatible with the fluid
handled.
WARNING
Failure to use or incorrect use of auxiliary connections (e.g. barrier fluid, flushing
liquid, etc.)
Risk of injury from escaping fluid!
Risk of burns!
Malfunction of the pump!
▷ Refer to the general arrangement drawing, the piping layout and pump
markings (if any) for the quantity, dimensions and locations of auxiliary
connections.
▷ Use the auxiliary connections provided.
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