Engine : Expired / General Subjects - 901/881
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| A recirculating, or bleed off line is installed on a centrifugal pump in order to __________. |
| A) equalize pressure on both sides of the suction valve disc |
| B) establish a back pressure at the labyrinth seal to eliminate leakage |
| C) prevent the pump from overheating when operating at shutoff head |
| D) decrease the net positive suction head |
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