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6 years ago in Discussion By Fern G
How to choose between centrifugal pumps and positive displacement pumps?
I’m unable to choose between centrifugal pumps and positive displacement pumps. Can someone tell me on what are the aspects that I should look into while choosing one among them?
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By Arjun Patel Answered 6 years ago
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By Arjun Patel Answered 6 years ago
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By Jang Bahadur Singh Answered 6 years ago
1.Capacity and Viscosity
In a centrifugal pump the flow reduces when the viscosity increases
In a positive displacement pump the flow increases when viscosity increases. Positive displacement pumps are suited for higher viscosity applications
2.Net Positive Suction Head
In a centrifugal pump, (NPSH) net positive suction head varies as a function of flow determined by pressure
In a positive displacement pump, net positive suction pump varies as a function of flow determined by speed.
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