Engineering School on Instagram: "Why Suction Pipe Diameter Is Bigger Than Discharge Pipe in Pump | Pump Basics Explained In this video, we explain why the suction piping diameter is larger than the discharge piping in a pump. A larger suction pipe helps reduce friction losses, prevents cavitation, maintains proper pressure, and ensures smooth water flow into the pump. This concept is very important for mechanical engineering students, pump operators, and HVAC technicians. pump suction pipe suct