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- First Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q511 - General Subjects I
20. A spur gear pump should be operated with the discharge valves __________.
A spur gear pump, being a positive displacement pump, requires the discharge valve to be fully open to prevent dangerous pressure buildup. Throttling the discharge restricts flow and rapidly increases pressure, potentially damaging the pump or system; flow should be controlled via bypass or speed control.
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