Where does the greatest pressure in hoses typically occur?

The greatest pressure in hoses typically occurs at the pump. This is because the pump is responsible for generating the pressure needed to move the liquid through the hoses and to the application equipment, such as nozzles or booms. When the pump operates, it forces the liquid into the hose system, creating a pressurized environment.

As the fluid travels through the hoses, some pressure is lost due to friction and resistance within the hose and at fittings, which is why you may observe a decrease in pressure when measuring near the nozzle or boom. Therefore, while the nozzle or boom may have pressure present, it is at the pump where the highest pressure is generated and maintained in the system. The reservoir, on the other hand, typically holds the liquid at atmospheric pressure, not contributing to pressurization.