Centrifugal pumps are used in a wide range of pressures (5 to 200 psi), especially when spraying what kind of materials?

• A. Abrasive materials
• B. Nonabrasive liquids
• C. Water only
• D. Fertilizers

Answer: (A)

Centrifugal pumps deliver a high, steady flow over a wide range of pressures, which is ideal for pushing spray mixtures through nozzles to achieve good atomization. When spraying abrasive materials, the liquid contains solid particles that can wear down pump internals. Centrifugal pumps are well suited for this scenario because they can be built with wear-resistant components (like hardened impellers and coatings) and still maintain the necessary pressure to atomize the spray, even as the fluid may be more demanding than plain water. This combination of high-flow capability and resilience to wear makes them especially suitable for spraying abrasive materials.