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.
Where would you use an eccentric reducer?
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.
How do you install eccentric reducer at pump suction?
USE ECCENTRIC REDUCERS ON THE SUCTION SIDE Install the flat side of the reducer on the top when fluid is coming from below the pump. If the fluid comes from the top, the flat portion of the reducer should be mounted on the bottom of the pipe.
Where are concentric and eccentric reducers used?
Concentric reducers are used where the pipework is vertically installed and at the discharge side of pumps. Eccentric reducers are more often used when the pipework lays on a pipe rack. Because of the flat side, aligning and securely mounting the pipes to the rack is easier.
Why is a flat side up reducer used at pump suction?
An eccentric reducer (flat side up) is used to allow any vapor in the suction line to freely flow into the pump suction and be pumped away. So rather than preventing bubble formation, an eccentric reducer provides a path for bubbles to escape.
Why is there a reducer at pump suction?
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 the difference between eccentric and concentric reducer?
While this may seem complicated, it’s actually quite simple. 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.
What is the difference between a concentric and eccentric reducer?
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.
Why reducer is used?
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.
Why eccentric reducer is used in pump suction piping?
You must ensure proper installation of eccentric reducer in pump suction piping to minimize accumulation of any air or gas bubbles in the suction. If concentric reducers are used, their upper part can allow accumulation of trace amounts of air or vapors at the pump suction.
Where should eccentric reducers be placed?
When the source of supply is above the pump, then the eccentric reducers must be placed with the flat side at the bottom. Picture 1 – Eccentric reducers installation when source of supply is below or above the pump suction nozzle
What are the disadvantages of using concentric reducers in vacuum pumps?
If concentric reducers are used, their upper part can allow accumulation of trace amounts of air or vapors at the pump suction. This can lead to creation of bigger gas bubbles near the pump suction. If these gas bubbles manage to escape from the reducer and get into the pump suction, resulting cavitation is damaging for the pump.
What is the purpose of a concentric reducer?
This configuration prevents air pocket accumulation at the upstream end of the reducer. Concentric reducer is recommended for vertical inlet (suction) piping or horizontal installations where there is no potential for air vapor accumulation.