Answering Common Questions About Centrifugal Pumps

Centrifugal pumps play a central role in everything from municipal water supplies to agriculture. They can be used in many ways in job sites and are a key part of many different kinds of equipment. If you need to rent a centrifugal pump from our equipment rental company, here are the answers to some questions you may have about operating it.

How do centrifugal pumps work?

Centrifugal pumps are a form of kinetic pump. The pumps contain a rotating impeller that is housed in a casing. Liquid moves into the casing via a suction inlet and is then spun outside the casing and through a discharge port. The impeller creates velocity in the liquid that becomes pressure energy. Because of this energy, centrifugal pumps can handle high and highly changeable flow rates of liquid without requiring a pressure relief valve. This means that there is reduced wear and tear on pipes, seals, and bearing, making centrifugal pumps efficient and easy to use.

Do centrifugal pumps have minimum flow rates?

Although there are no standard guidelines for a minimum flow rate, centrifugal pumps usually shouldn’t be operated at less than 50% of their efficiency point. Low flows can lead to overheating, cavitation, excessive noise, and damage. A centrifugal pump should never be operated at zero flow for an extended period of time, as the water in the system will boil and melt the internal components.

What kind of centrifugal pump should I use?

The head and flow requirements of your project will determine what kind of centrifugal pump you need. Discuss your project needs with your equipment rental company before you rent your pump, both to ensure that you get the right one for the job and to determine if you have the appropriate hoses.

From large, contractor-led projects to small, DIY, home improvement jobs, A-1 Equipment Rental Center has the tools you need to get your projects done. For more information about equipment rental in San Francisco and to get the advice of our team about your rental needs, call us at (650) 369-2992.

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