centrifugal pump suction and discharge|pump impeller size chart

MISSION® CENTRIFUGAL PUMPS Magnum™, 2500 Supreme™, Magnum XP™, Magnum Vortex™, Sandmaster™ . Included in this manual are quality NOV products that have been designed to meet your needs. The future is being defined and the solution is available from NOV. i 1. MISSION® PRODUCTS Mission Magnum and 2500 Supreme Pumps

Centrifugal pumps are widely used in various industries for transferring fluids from one location to another. Proper installation of centrifugal pump suction and discharge piping is crucial for the efficient operation of the pump. In this article, we will discuss the importance of using eccentric reducers on the suction side of the pump when a pipe size transition is required and best practices for pump discharge piping.

Include a straight-run pipe length equal to five to 10 times the pipe diameter between the pump inlet and any obstruction in the suction line. Obstructions include valves, elbows, “tees,” etc. Keeping the pump suction piping short ensures that the inlet pressure drop is as low as possible. The straight-run pipe gives

Centrifugal Pump Suction Side

When a pipe size transition is needed on the suction side of a centrifugal pump, it is recommended to use eccentric reducers. Eccentric reducers are designed to maintain a smooth flow of fluid by gradually reducing the pipe size without causing turbulence or cavitation in the pump.

It is important to install the eccentric reducer with the flat side on the top. This orientation helps prevent air pockets from forming in the suction line, which can lead to pump cavitation and reduce the pump's efficiency. By ensuring proper alignment of the eccentric reducer, you can improve the overall performance and longevity of the centrifugal pump.

Centrifugal Pump Discharge Side

Proper installation of the discharge piping is essential to ensure the efficient operation of the centrifugal pump. Here are some best practices for pump discharge piping:

1. Use a straight pipe section: Install a straight pipe section of at least five times the pipe diameter before any elbows or fittings on the discharge side of the pump. This helps to reduce turbulence and pressure drop in the system.

2. Support the piping: Properly support the discharge piping to prevent sagging or misalignment, which can cause stress on the pump and reduce its efficiency.

3. Avoid excessive bends: Minimize the number of bends and elbows in the discharge piping to maintain a smooth flow of fluid. Excessive bends can increase friction losses and reduce the pump's performance.

4. Check for leaks: Regularly inspect the discharge piping for any leaks or damage. Leaks can lead to loss of fluid and decrease the pump's effectiveness.

By following these best practices for pump discharge piping, you can ensure the reliable and efficient operation of your centrifugal pump.

Pipe sizing is a balancing act between cost and friction loss. Larger pipes cost more, whereas smaller pipes impose greater friction losses on the system. In terms of diameter, discharge pipe diameter should normally match the discharge flange on the pump

Note: it is not advisable to keep a pump running at zero flow for long periods of time. The total head at zero flow is the maximum head also called the shut-off head, the total head decreases as the flow increases. The plot of total head vs. flow for a centrifugal pump is very typical and it looks like this: Figure 6 Typical curve of total head .

centrifugal pump suction and discharge|pump impeller size chart