What is the term for pressure lost when the nozzle is located above the pump?

The correct answer is based on an understanding of how fluid dynamics work in fire suppression and pumping systems. When a nozzle is located above the pump, the pressure loss is attributed to the elevation difference between the pump and the nozzle. This loss is known as elevation loss. It results from the gravitational force acting on the water, which causes pressure to decrease as the water travels upwards against gravity.

Elevation loss is calculated based on the height difference between the two points and the weight of the fluid. The greater the height, the more pressure is lost. Understanding this concept is crucial for fire fighters and operators to ensure that they maintain adequate water pressure at the nozzle, especially in situations where they might be using elevated master streams or when operating from a pumper at a lower elevation than the nozzle.

Static pressure refers to the pressure in a system when water is not flowing, flow loss is the loss experienced due to turbulence and changes in the flow path, and friction loss is the energy lost due to friction between the moving fluid and the internal surfaces of the hose and piping. While these concepts are important in the overall understanding of water flow and pressure in a hose system, they do not directly address the specific scenario of pressure lost due to height elevation. Hence, elevation loss