Why reducer is used in pump suction?

Why reducer is used in pump suction?

Eccentric reducers are used at the suction side of pumps to ensure air does not accumulate in the pipe. The gradual accumulation of air in a concentric reducer could result in a large bubble that could eventually cause the pump to stall or cause cavitation when drawn into the pump.

Why do we use concentric reducer in pump discharge?

Concentric reducers are used where the pipework is vertically installed and at the discharge side of pumps. To avoid cavitation, the pipework is connected to the pump via an eccentric reducer that has its flat side facing up.

What is reducer fitting used for?

A reducer is a kind of pipe fitting used in process piping that reduces the pipe size from a larger bore to a smaller bore (inner diameter). A reducer allows for a change in pipe size to meet hydraulic flow requirements of the system, or to adapt to existing piping of a different size.

On which side of a pump do you typically install an eccentric reducer?

flat side
When the source of supply is above the pump, then the eccentric reducers must be placed with the flat side at the bottom. In case of long horizontal pipe runs, air pockets are avoided by installing the eccentric reducer with the flat side up.

What is reducer pump?

Pump Suction Pipe Size A reducer fitting is typically used in pump suction piping to reduce the size of the suction pipe to match the size of the pump suction end flange. A reducer is a constriction and requires careful design to avoid both turbulence and the creation of pockets where air or vapour might collect.

What is difference between concentric and eccentric reducer?

Concentric reducers reduce the pipe in the center. So, if you’re looking at the reducer head-on, you can see the smaller section is formed in the direct center of the larger side. Eccentric reducers reduce the pipe to the side. Eccentric reducers are used when the pipes have to maintain the same top or bottom level.

What is difference between eccentric and concentric reducer?

Can we use concentric reducer in pump suction?

Concentric reducer is recommended for vertical inlet (suction) piping or horizontal installations where there is no potential for air vapor accumulation. When the source of supply is above the pump, then the eccentric reducers must be placed with the flat side down.

Why reducer is used in pipeline?

Reducers are applied in piping systems, in order to have the pipe diameter differ from one end to the next. The two ends have unequal diameters to achieve this purpose. Most of the time the upstream diameter is larger than the downstream size.

What is the difference between concentric reducer and eccentric reducer?

What is a reducing tee?

A Reducing Tee is a T-shaped pipe fitting with two outlets that cut at 90 degrees to the main line. These tees are available with a combination of diverse outlet sizes. In this, the branch port size is smaller than the other ports of the run.

Why does the suction side of centrifugal pump uses the reducer?

Eccentric reducers are typically installed at the centrifugal process pump suction nozzles in order to facilitate proper transition from the the larger diameter (low flow velocity, moderate friction loss) suction piping to the pump suction nozzle.

When to use eccentric reducer or flat side up?

When the source of supply is below the pump, then the eccentric reducers must be placed with the flat side up. In case of long horizontal pipe runs, air pockets are avoided by installing the eccentric reducer with the flat side up.

How is the reducer connected to the pump nozzle?

In such cases, straight horizontal pipe between reducer and pump suction should be kept to a minimum. In such installations, the reducer flange is often directly connected at the pump’s suction nozzle. There is no straight length of piping between the reducer outlet and the pump nozzle.

What kind of reducer do I need for suction pipe?

It’s standard practice to employ suction-side piping one or two sizes bigger than the pump inlet. A reducer fitting is typically used in pump suction piping to reduce the size of the suction pipe to match the size of the pump suction end flange.