🔍 Key Concepts

• Centrifugal pump suction piping design recommendations • Effect of suction pipe diameter on flow velocity and cavitation risk • Good practice for fittings (like elbows) immediately at the pump suction

💭 Think About

• How does changing the suction pipe size relative to the pump nozzle affect suction velocity and NPSH (Net Positive Suction Head)? • Which option would give the smoothest, least-turbulent flow into the eye of the impeller? • Why might a short radius elbow right at the suction nozzle be discouraged by manufacturers?

✅ Before You Answer

• Verify which choice best reduces friction losses and turbulence in the suction line. • Check which option aligns with common marine pump installation practices for centrifugal pumps. • Confirm that the option avoids abrupt changes in direction or high velocity right at the pump suction.