Which lift is not suitable for centrifugal pumps?

Which lift is not suitable for centrifugal pumps?

• A. Dynamic
• B. Static
• C. Vertical
• D. Gravitational

Answer: (B)

Centrifugal pumps move water by imparting velocity to it and creating suction as flow begins. They need some flow or a pressure difference on the suction side to develop head. A static lift means drawing water from a source that is at rest with no flow and no initial pressure advantage to start movement. With no flow to establish suction, the pump cannot prime or lift the water, and cavitation or failure to start occurs. So static lift is not suitable for centrifugal pumps. Lifts that involve moving water or gravity helping the flow provide the needed suction conditions, so they can be used with centrifugal pumps.

Centrifugal pumps move water by imparting velocity to it and creating suction as flow begins. They need some flow or a pressure difference on the suction side to develop head. A static lift means drawing water from a source that is at rest with no flow and no initial pressure advantage to start movement. With no flow to establish suction, the pump cannot prime or lift the water, and cavitation or failure to start occurs. So static lift is not suitable for centrifugal pumps. Lifts that involve moving water or gravity helping the flow provide the needed suction conditions, so they can be used with centrifugal pumps.