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Category: Fluid Dynamics
Question: What are the advantages and disadvantages of using gear pumps?
Keywords: v1i9,gear,pump,advantages,disadvantages,uses,control
Answer: Gear pumps are a type of positive displacement pump that are appropriate for pumping relatively high pressures and low capacities.Advantages include the ability to handle a wide range of viscosities, less sensitivity to cavitation (than centrigual style pumps), relatively simple to maintain and rebuild.Disadvantges can include a limited array of materials of construction due to tight tolerances required, high shear placed on the liquid, and the fluid must be free of abrasives.Also note that gear pumps must be controlled via the motor speed. Throttling the discharge is not an acceptable means of control.Reference: The Pilot Plant Real Book, FXM Engineering, ISBN 0972176918


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