What type of fire pump is best suited for low viscosity fluids?

A centrifugal pump is ideal for low viscosity fluids due to its design and operating principles. These pumps utilize a rotating impeller to impart energy to the fluid, creating a flow. The centrifugal force generated by the impeller effectively moves low viscosity fluids quickly and efficiently through the pump and into the discharge line.

This pump type is particularly advantageous for scenarios where high flow rates are required and the fluid being pumped doesn’t resist flow much, such as water or other similar liquids. The construction of centrifugal pumps allows for continuous operation, which is often necessary in fire fighting scenarios where a consistent supply of water is crucial.

Although piston pumps and positive displacement pumps can handle various substances, they are generally more suited for fluids with greater viscosity or those requiring precise flow measurements. Rotary gear pumps are also better for thicker fluids, as they rely on the engagement of gears to move the fluid, which can create issues with low viscosity liquids that don't provide enough resistance to function effectively. Thus, the selection of a centrifugal pump enhances operational efficiency for low viscosity applications.