What is the importance of considering minor losses in pipe pressure drop calculations?

Minor losses, such as those caused by bends, valves, and fittings, can contribute significantly to overall pressure drop in a piping system. These losses are often overlooked, but they can be substantial, especially in systems with many fittings and valves. Considering minor losses in pressure drop calculations ensures that the system is designed to accommodate these additional losses, reducing the risk of undersizing pumps and other equipment.